About “Denial of Service (DoS)”

A curated feed of “Denial of Service (DoS)”-related CVEs appears below. We currently track 39647 CVEs for this tag (all time). In the last 365 days, 3219 were published. Average CVSS is 6.6 (all time; 6.6 over 365d), and 47% are rated High/Critical (all time). Top CWEs (last 365 days): CWE-400 - Uncontrolled Resource Consumption, CWE-770 - Allocation of Resources Without Limits or Throttling, CWE-476 - NULL Pointer Dereference.

In our taxonomy this topic maps to a LOW impact class. Vendor advisories and release notes are key. Verify compatibility matrices, prefer supported long term versions, and stage rollouts with monitoring. Use the filters below to sort by CVSS, risk and CWE. Each detail page highlights vendor advisories and mitigation tips.

CVEs tagged with this topic. Filters apply to the whole list (loaded from JSON).

CVSS ≥ 0.0
2001-04-17
Low

CVE-2001-1393

Unknown vulnerability in classifier code for Linux kernel before 2.2.19 could result in denial of service (hang).

Low

CVE-2001-1394

Signedness error in (1) getsockopt and (2) setsockopt for Linux kernel before 2.2.19 allows local users to cause a denial of service.

Low

CVE-2001-1400

Unknown vulnerabilities in the UDP port allocation for Linux kernel before 2.2.19 could allow local users to cause a denial of service (deadlock).

2001-03-26
High

CVE-2001-0166

Macromedia Shockwave Flash plugin version 8 and earlier allows remote attackers to cause a denial of service via malformed tag length specifiers in a SWF file.

High

CVE-2001-0172

Buffer overflow in ReiserFS 3.5.28 in SuSE Linux allows local users to cause a denial of service and possibly execute arbitrary commands by via a long directory name.

Medium

CVE-2001-0175

The caching module in Netscape Fasttrack Server 4.1 allows remote attackers to cause a denial of service (resource exhaustion) by requesting a large number of non-existent URLs.

Medium

CVE-2001-0177

WebMaster ConferenceRoom 1.8.1 allows remote attackers to cause a denial of service via a buddy relationship between the IRC server and a server clone.

Medium

CVE-2001-0182

FireWall-1 4.1 with a limited-IP license allows remote attackers to cause a denial of service by sending a large number of spoofed IP packets with various source addresses to the inside interface, wh…

Low

CVE-2001-0184

eEye Iris 1.01 beta allows remote attackers to cause a denial of service via a malformed packet, which causes Iris to crash when a user views the packet.

Medium

CVE-2001-0185

Netopia R9100 router version 4.6 allows authenticated users to cause a denial of service by using the router's telnet program to connect to the router's IP address, which causes a crash.

Medium

CVE-2001-0188

GoodTech FTP server 3.0.1.2.1.0 and earlier allows remote attackers to cause a denial of service via a flood of connections to the server, which causes it to crash.

Critical

CVE-2001-0209

Buffer overflow in Shoutcast Distributed Network Audio Server (DNAS) 1.7.1 allows remote attackers to cause a denial of service, and possibly execute arbitrary commands, via a long description.

Low

CVE-2001-0219

Vulnerability in Support Tools Manager (xstm,cstm,stm) in HP-UX 11.11 and earlier allows local users to cause a denial of service.

Critical

CVE-2001-0233

Buffer overflow in micq client 0.4.6 and earlier allows remote attackers to cause a denial of service, and possibly execute arbitrary commands, via a long Description field.

2001-03-13
Medium

CVE-2001-0122

Kernel leak in AfpaCache module of the Fast Response Cache Accelerator (FRCA) component of IBM HTTP Server 1.3.x and Websphere 3.52 allows remote attackers to cause a denial of service via a series o…

High

CVE-2001-1230

Buffer overflows in Icecast before 1.3.10 allow remote attackers to cause a denial of service (crash) and execute arbitrary code.

2001-03-12
High

CVE-1999-0359

ptylogin in Unix systems allows users to perform a denial of service by locking out modems, dial out with that modem, or obtain passwords.

Medium

CVE-1999-0681

Buffer overflow in Microsoft FrontPage Server Extensions (PWS) 3.0.2.926 on Windows 95, and possibly other versions, allows remote attackers to cause a denial of service via a long URL.

Medium

CVE-1999-0729

Buffer overflow in Lotus Notes LDAP (NLDAP) allows an attacker to conduct a denial of service through the ldap_search request.

Medium

CVE-1999-0784

Denial of service in Oracle TNSLSNR SQL*Net Listener via a malformed string to the listener port, aka NERP.

Medium

CVE-1999-0805

Novell NetWare Transaction Tracking System (TTS) in Novell 4.11 and earlier allows remote attackers to cause a denial of service via a large number of requests.

High

CVE-1999-0923

Sample runnable code snippets in ColdFusion Server 4.0 allow remote attackers to read files, conduct a denial of service, or use the server as a proxy for other HTTP calls.

Medium

CVE-1999-0924

The Syntax Checker in ColdFusion Server 4.0 allows remote attackers to conduct a denial of service.

Medium

CVE-1999-0945

Buffer overflow in Internet Mail Service (IMS) for Microsoft Exchange 5.5 and 5.0 allows remote attackers to conduct a denial of service via AUTH or AUTHINFO commands.

Medium

CVE-2000-0307

Vulnerability in xserver in SCO UnixWare 2.1.x and OpenServer 5.05 and earlier allows an attacker to cause a denial of service which prevents access to reserved port numbers below 1024.

Low

CVE-2000-0309

The i386 trace-trap handling in OpenBSD 2.4 with DDB enabled allows a local user to cause a denial of service.

Medium

CVE-2000-0310

IP fragment assembly in OpenBSD 2.4 allows a remote attacker to cause a denial of service by sending a large number of fragmented packets.

Medium

CVE-2000-0349

Vulnerability in the passthru driver in SCO UnixWare 7.1.0 allows an attacker to cause a denial of service.

Medium

CVE-2001-0017

Memory leak in PPTP server in Windows NT 4.0 allows remote attackers to cause a denial of service via a malformed data packet, aka the "Malformed PPTP Packet Stream" vulnerability.

Medium

CVE-2001-0107

Veritas Backup agent on Linux allows remote attackers to cause a denial of service by establishing a connection without sending any data, which causes the process to hang.

Medium

CVE-2001-0121

ImageCast Control Center 4.1.0 allows remote attackers to cause a denial of service (resource exhaustion or system crash) via a long string to port 12002.

High

CVE-2001-0127

Buffer overflow in Olivier Debon Flash plugin (not the Macromedia plugin) allows remote attackers to cause a denial of service and possibly execute arbitrary code via a long DefineSound tag.

Critical

CVE-2001-0129

Buffer overflow in Tinyproxy HTTP proxy 1.3.3 and earlier allows remote attackers to cause a denial of service and possibly execute arbitrary commands via a long connect request.

Critical

CVE-2001-0130

Buffer overflow in HTML parser of the Lotus R5 Domino Server before 5.06, and Domino Client before 5.05, allows remote attackers to cause a denial of service and possibly execute arbitrary commands v…

Medium

CVE-2001-0136

Memory leak in ProFTPd 1.2.0rc2 allows remote attackers to cause a denial of service via a series of USER commands, and possibly SIZE commands if the server has been improperly installed.

High

CVE-2001-1229

Buffer overflows in (1) Icecast before 1.3.9 and (2) libshout before 1.0.4 allow remote attackers to cause a denial of service (crash) and execute arbitrary code.

2001-02-23
Medium

CVE-2001-1435

inetd in Compaq Tru64 UNIX 5.1 allows attackers to cause a denial of service (network connection loss) by causing one of the services handled by inetd to core dump during startup, which causes inetd…

2001-02-16
Critical

CVE-2001-0032

Format string vulnerability in ssldump possibly allows remote attackers to cause a denial of service and possibly gain root privileges via malicious format string specifiers in a URL.

High

CVE-2001-0035

Buffer overflow in the kdc_reply_cipher function in KTH Kerberos IV allows remote attackers to cause a denial of service and possibly execute arbitrary commands via a long authentication request.

Medium

CVE-2001-0039

IPSwitch IMail 6.0.5 allows remote attackers to cause a denial of service using the SMTP AUTH command by sending a base64-encoded user password whose length is between 80 and 136 bytes.

High

CVE-2001-0041

Memory leak in Cisco Catalyst 4000, 5000, and 6000 series switches allows remote attackers to cause a denial of service via a series of failed telnet authentication attempts.

Medium

CVE-2001-0049

WatchGuard SOHO FireWall 2.2.1 and earlier allows remote attackers to cause a denial of service via a large number of GET requests.

Critical

CVE-2001-0050

Buffer overflow in BitchX IRC client allows remote attackers to cause a denial of service and possibly execute arbitrary commands via an IP address that resolves to a long DNS hostname or domain name.

Low

CVE-2001-0052

IBM DB2 Universal Database version 6.1 allows users to cause a denial of service via a malformed query.

Medium

CVE-2001-0055

CBOS 2.4.1 and earlier in Cisco 600 routers allows remote attackers to cause a denial of service via a slow stream of TCP SYN packets.

Medium

CVE-2001-0057

Cisco 600 routers running CBOS 2.4.1 and earlier allow remote attackers to cause a denial of service via a large ICMP echo (ping) packet.

Medium

CVE-2001-0058

The Web interface to Cisco 600 routers running CBOS 2.4.1 and earlier allow remote attackers to cause a denial of service via a URL that does not end in a space character.

Low

CVE-2001-1439

Buffer overflow in the text editor functionality in HP-UX 10.01 through 11.04 on HP9000 Series 700 and Series 800 allows local users to cause a denial of service ("system availability") via text edit…

2001-02-12
Critical

CVE-2000-0894

HTTP server on the WatchGuard SOHO firewall does not properly restrict access to administrative functions such as password resets or rebooting, which allows attackers to cause a denial of service or…

Critical

CVE-2000-0895

Buffer overflow in HTTP server on the WatchGuard SOHO firewall allows remote attackers to cause a denial of service and possibly execute arbitrary code via a long GET request.

Medium

CVE-2000-0896

WatchGuard SOHO firewall allows remote attackers to cause a denial of service via a flood of fragmented IP packets, which causes the firewall to drop connections and stop forwarding packets.

High

CVE-2001-0006

The Winsock2ProtocolCatalogMutex mutex in Windows NT 4.0 has inappropriate Everyone/Full Control permissions, which allows local users to modify the permissions to "No Access" and disable Winsock net…

Medium

CVE-2001-0007

Buffer overflow in NetScreen Firewall WebUI allows remote attackers to cause a denial of service via a long URL request to the web administration interface.

Medium

CVE-2001-0014

Remote Data Protocol (RDP) in Windows 2000 Terminal Service does not properly handle certain malformed packets, which allows remote attackers to cause a denial of service, aka the "Invalid RDP Data"…

Low

CVE-2001-0019

Arrowpoint (aka Cisco Content Services, or CSS) allows local users to cause a denial of service via a long argument to the "show script," "clear script," "show archive," "clear archive," "show log,"…

Medium

CVE-2001-0026

rp-pppoe PPPoE client allows remote attackers to cause a denial of service via the Clamp MSS option and a TCP packet with a zero-length TCP option.

Low

CVE-2001-0062

procfs in FreeBSD and possibly other operating systems allows local users to cause a denial of service by calling mmap on the process' own mem file, which causes the kernel to hang.

Medium

CVE-2001-0064

Webconfig, IMAP, and other services in MDaemon 3.5.0 and earlier allows remote attackers to cause a denial of service via a long URL terminated by a "\r\n" string.

Critical

CVE-2001-0065

Buffer overflow in bftpd 1.0.13 allows remote attackers to cause a denial of service and possibly execute arbitrary commands via a long SITE CHOWN command.

Critical

CVE-2001-0070

Buffer overflow in 1st Up Mail Server 4.1 allows remote attackers to cause a denial of service, and possibly execute arbitrary commands, via a long MAIL FROM command.

Medium

CVE-2001-0080

Cisco Catalyst 6000, 5000, or 4000 switches allow remote attackers to cause a denial of service by connecting to the SSH service with a non-SSH client, which generates a protocol mismatch error.

Medium

CVE-2001-0083

Windows Media Unicast Service in Windows Media Services 4.0 and 4.1 does not properly shut down some types of connections, producing a memory leak that allows remote attackers to cause a denial of se…

High

CVE-2001-0085

Buffer overflow in Kermit communications software in HP-UX 11.0 and earlier allows local users to cause a denial of service and possibly execute arbitrary commands.

Medium

CVE-2001-0096

FrontPage Server Extensions (FPSE) in IIS 4.0 and 5.0 allows remote attackers to cause a denial of service via a malformed form, aka the "Malformed Web Form Submission" vulnerability.

Medium

CVE-2001-0097

The Web interface for Infinite Interchange 3.6.1 allows remote attackers to cause a denial of service (application crash) via a large POST request.

Medium

CVE-2001-0106

Vulnerability in inetd server in HP-UX 11.04 and earlier allows attackers to cause a denial of service when the "swait" state is used by a server.

Low

CVE-2001-1273

The "mxcsr P4" vulnerability in the Linux kernel before 2.2.17-14, when running on certain Intel CPUs, allows local users to cause a denial of service (system halt).

2001-01-23
High

CVE-2001-1274

Buffer overflow in MySQL before 3.23.31 allows attackers to cause a denial of service and possibly gain privileges.

2001-01-09
Medium

CVE-2000-0897

Small HTTP Server 2.03 and earlier allows remote attackers to cause a denial of service by repeatedly requesting a URL that references a directory that does not contain an index.html file, which cons…

Medium

CVE-2000-0899

Small HTTP Server 2.01 allows remote attackers to cause a denial of service by connecting to the server and sending out multiple GET, HEAD, or POST requests and closing the connection before the serv…

Medium

CVE-2000-1039

Various TCP/IP stacks and network applications allow remote attackers to cause a denial of service by flooding a target host with TCP connection attempts and completing the TCP/IP handshake without m…

Medium

CVE-2000-1081

The xp_displayparamstmt function in SQL Server and Microsoft SQL Server Desktop Engine (MSDE) does not properly restrict the length of a buffer before calling the srv_paraminfo function in the SQL Se…

Medium

CVE-2000-1082

The xp_enumresultset function in SQL Server and Microsoft SQL Server Desktop Engine (MSDE) does not properly restrict the length of a buffer before calling the srv_paraminfo function in the SQL Serve…

Low

CVE-2000-1083

The xp_showcolv function in SQL Server and Microsoft SQL Server Desktop Engine (MSDE) does not properly restrict the length of a buffer before calling the srv_paraminfo function in the SQL Server API…

Medium

CVE-2000-1084

The xp_updatecolvbm function in SQL Server and Microsoft SQL Server Desktop Engine (MSDE) does not properly restrict the length of a buffer before calling the srv_paraminfo function in the SQL Server…

Medium

CVE-2000-1085

The xp_peekqueue function in Microsoft SQL Server 2000 and SQL Server Desktop Engine (MSDE) does not properly restrict the length of a buffer before calling the srv_paraminfo function in the SQL Serv…

Medium

CVE-2000-1086

The xp_printstatements function in Microsoft SQL Server 2000 and SQL Server Desktop Engine (MSDE) does not properly restrict the length of a buffer before calling the srv_paraminfo function in the SQ…

Medium

CVE-2000-1087

The xp_proxiedmetadata function in Microsoft SQL Server 2000 and SQL Server Desktop Engine (MSDE) does not properly restrict the length of a buffer before calling the srv_paraminfo function in the SQ…

Medium

CVE-2000-1088

The xp_SetSQLSecurity function in Microsoft SQL Server 2000 and SQL Server Desktop Engine (MSDE) does not properly restrict the length of a buffer before calling the srv_paraminfo function in the SQL…

Medium

CVE-2000-1097

The web server for the SonicWALL SOHO firewall allows remote attackers to cause a denial of service via a long username in the authentication page.

Medium

CVE-2000-1098

The web server for the SonicWALL SOHO firewall allows remote attackers to cause a denial of service via an empty GET or POST request.

Medium

CVE-2000-1102

PTlink IRCD 3.5.3 and PTlink Services 1.8.1 allow remote attackers to cause a denial of service (server crash) via "mode +owgscfxeb" and "oper" commands.

Medium

CVE-2000-1107

in.identd ident server in SuSE Linux 6.x and 7.0 allows remote attackers to cause a denial of service via a long request, which causes the server to access a NULL pointer and crash.

Medium

CVE-2000-1111

Telnet Service for Windows 2000 Professional does not properly terminate incomplete connection attempts, which allows remote attackers to cause a denial of service by connecting to the server and not…

High

CVE-2000-1115

Buffer overflow in remote web administration component (webprox.dll) of 602Pro LAN SUITE before 2000.0.1.33 allows remote attackers to cause a denial of service and possibly execute arbitrary command…

High

CVE-2000-1116

Buffer overflow in TransSoft Broker FTP Server before 4.3.0.1 allows remote attackers to cause a denial of service and possibly execute arbitrary commands via a long command.

Critical

CVE-2000-1126

Vulnerability in auto_parms and set_parms in HP-UX 11.00 and earlier allows remote attackers to execute arbitrary commands or cause a denial of service.

Medium

CVE-2000-1129

McAfee WebShield SMTP 4.5 allows remote attackers to cause a denial of service via a malformed recipient field.

Low

CVE-2000-1146

Recourse ManTrap 1.6 allows attackers to cause a denial of service via a sequence of commands that navigate into and out of the /proc/self directory and executing various commands such as ls or pwd.

Medium

CVE-2000-1150

Felix IRC client in BeOS r5 pro and earlier allows remote attackers to conduct a denial of service via a message that contains a long URL.

Medium

CVE-2000-1151

Baxter IRC client in BeOS r5 pro and earlier allows remote attackers to conduct a denial of service via a message that contains a long URL.

Medium

CVE-2000-1152

Browser IRC client in BeOS r5 pro and earlier allows remote attackers to conduct a denial of service via a message that contains a long URL.

Medium

CVE-2000-1153

PostMaster 1.0 in BeOS r5 pro and earlier allows remote attackers to conduct a denial of service via a message that contains a long URL.

Medium

CVE-2000-1154

RHConsole in RobinHood 1.1 web server in BeOS r5 pro and earlier allows remote attackers to cause a denial of service via long HTTP request.

Medium

CVE-2000-1155

RHDaemon in RobinHood 1.1 web server in BeOS r5 pro and earlier allows remote attackers to cause a denial of service via long HTTP request.

Medium

CVE-2000-1160

NAI Sniffer Agent allows remote attackers to cause a denial of service (crash) by sending a large number of login requests.

Medium

CVE-2000-1165

Balabit syslog-ng allows remote attackers to cause a denial of service (application crash) via a malformed log message that does not have a closing > in the priority specifier.

High

CVE-2000-1168

IBM HTTP Server 1.3.6 (based on Apache) allows remote attackers to cause a denial of service and possibly execute arbitrary commands via a long GET request.

Critical

CVE-2000-1172

Buffer overflow in Gaim 0.10.3 and earlier using the OSCAR protocol allows remote attackers to conduct a denial of service and possibly execute arbitrary commands via a long HTML tag.

Medium

CVE-2000-1182

WatchGuard Firebox II allows remote attackers to cause a denial of service by flooding the Firebox with a large number of FTP or SMTP requests, which disables proxy handling.

Medium

CVE-2000-1184

telnetd in FreeBSD 4.2 and earlier, and possibly other operating systems, allows remote attackers to cause a denial of service by specifying an arbitrary large file in the TERMCAP environmental varia…

Medium

CVE-2000-1185

The telnet proxy in RideWay PN proxy server allows remote attackers to cause a denial of service via a flood of connections that contain malformed requests.

2000-12-31
Medium

CVE-2000-1226

Snort 1.6, when running in straight ASCII packet logging mode or IDS mode with straight decoded ASCII packet logging selected, allows remote attackers to cause a denial of service (crash) by sending…

Medium

CVE-2000-1227

Windows NT 4.0 and Windows 2000 hosts allow remote attackers to cause a denial of service (unavailable connections) by sending multiple SMB SMBnegprots requests but not reading the response that is s…

2000-12-19
Medium

CVE-2000-0887

named in BIND 8.2 through 8.2.2-P6 allows remote attackers to cause a denial of service by making a compressed zone transfer (ZXFR) request and performing a name service query on an authoritative rec…

Medium

CVE-2000-0888

named in BIND 8.2 through 8.2.2-P6 allows remote attackers to cause a denial of service by sending an SRV record to the server, aka the "srv bug."

High

CVE-2000-0907

EServ 2.92 Build 2982 allows remote attackers to cause a denial of service and possibly execute arbitrary commands via long HELO and MAIL FROM commands.

Medium

CVE-2000-0908

BrowseGate 2.80 allows remote attackers to cause a denial of service and possibly execute arbitrary commands via long Authorization or Referer MIME headers in the HTTP request.

Medium

CVE-2000-0914

OpenBSD 2.6 and earlier allows remote attackers to cause a denial of service by flooding the server with ARP requests.

Medium

CVE-2000-0929

Microsoft Windows Media Player 7 allows attackers to cause a denial of service in RTF-enabled email clients via an embedded OCX control that is not closed properly, aka the "OCX Attachment" vulnerabi…

High

CVE-2000-0931

Buffer overflow in Pegasus Mail 3.11 allows remote attackers to cause a denial of service and possibly execute arbitrary commands via a long email message containing binary data.

Medium

CVE-2000-0932

MAILsweeper for SMTP 3.x does not properly handle corrupt CDA documents in a ZIP file and hangs, which allows remote attackers to cause a denial of service.

High

CVE-2000-0934

Glint in Red Hat Linux 5.2 allows local users to overwrite arbitrary files and cause a denial of service via a symlink attack.

Medium

CVE-2000-0939

Samba Web Administration Tool (SWAT) in Samba 2.0.7 allows remote attackers to cause a denial of service by repeatedly submitting a nonstandard URL in the GET HTTP request and forcing it to restart.

High

CVE-2000-0943

Buffer overflow in bftp daemon (bftpd) 1.0.11 allows remote attackers to cause a denial of service and possibly execute arbitrary commands via a long USER command.

Medium

CVE-2000-0953

Shambala Server 4.5 allows remote attackers to cause a denial of service by opening then closing a connection.

Medium

CVE-2000-0962

The IPSEC implementation in OpenBSD 2.7 does not properly handle empty AH/ESP packets, which allows remote attackers to cause a denial of service.

Critical

CVE-2000-0964

Buffer overflow in the web administration service for the HiNet LP5100 IP-phone allows remote attackers to cause a denial of service and possibly execute arbitrary commands via a long GET request.

Medium

CVE-2000-0965

The NSAPI plugins for TGA and the Java Servlet proxy in HP-UX VVOS 10.24 and 11.04 allows an attacker to cause a denial of service (high CPU utilization).

Critical

CVE-2000-0971

Avirt Mail 4.0 and 4.2 allows remote attackers to cause a denial of service and possibly execute arbitrary commands via a long "RCPT TO" or "MAIL FROM" command.