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CWE-20

13,674 CVEs • Abstraction: Class • Likelihood of Exploit: High

Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

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CVEs (13,674)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
1Linux
1Linux Kernel
Apr 16, 2026
May 2, 2005
N/A· v4
N/A· v3
7.1 HIGH· v2
The netfilter/iptables module in Linux before 2.6.8.1 allows remote attackers to cause a denial of service (kernel crash) or bypass firewall rules via crafted packets, which are not properly handled by the skb_checksum_h...Show more
The netfilter/iptables module in Linux before 2.6.8.1 allows remote attackers to cause a denial of service (kernel crash) or bypass firewall rules via crafted packets, which are not properly handled by the skb_checksum_help function.Show less
1Linux
1Linux Kernel
Apr 16, 2026
May 2, 2005
N/A· v4
N/A· v3
7.8 HIGH· v2
Netfilter in Linux kernel 2.6.8.1 allows remote attackers to cause a denial of service (kernel crash) via crafted IP packet fragments.
1Tiki
1Tikiwiki Cms/groupware
Apr 16, 2026
May 2, 2005
N/A· v4
N/A· v3
7.5 HIGH· v2
TikiWiki before 1.8.5 does not properly validate files that have been uploaded to the temp directory, which could allow remote attackers to upload and execute arbitrary PHP scripts, a different vulnerability than CVE-200...Show more
TikiWiki before 1.8.5 does not properly validate files that have been uploaded to the temp directory, which could allow remote attackers to upload and execute arbitrary PHP scripts, a different vulnerability than CVE-2004-1386.Show less
1Microsoft
3Windows 2000
Windows 2003 ServerWindows Nt
Apr 16, 2026
May 2, 2005
N/A· v4
N/A· v3
10.0 HIGH· v2
The License Logging service for Windows NT Server, Windows 2000 Server, and Windows Server 2003 does not properly validate the length of messages, which leads to an "unchecked buffer" and allows remote attackers to cause...Show more
The License Logging service for Windows NT Server, Windows 2000 Server, and Windows Server 2003 does not properly validate the length of messages, which leads to an "unchecked buffer" and allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code, aka the "License Logging Service Vulnerability."Show less
1Awstats
1Awstats
Apr 16, 2026
Jan 18, 2005
N/A· v4
N/A· v3
7.5 HIGH· v2
AWStats 6.1, and other versions before 6.3, allows remote attackers to execute arbitrary commands via shell metacharacters in the configdir parameter to aswtats.pl.
3Easy Software Products
KdeXpdf
3Cups
KdeXpdf
Apr 16, 2026
Jan 10, 2005
N/A· v4
N/A· v3
9.3 HIGH· v2
Buffer overflow in the Gfx::doImage function in Gfx.cc for xpdf 3.00, and other products that share code such as tetex-bin and kpdf in KDE 3.2.x to 3.2.3 and 3.3.x to 3.3.2, allows remote attackers to cause a denial of s...Show more
Buffer overflow in the Gfx::doImage function in Gfx.cc for xpdf 3.00, and other products that share code such as tetex-bin and kpdf in KDE 3.2.x to 3.2.3 and 3.3.x to 3.3.2, allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via a crafted PDF file that causes the boundaries of a maskColors array to be exceeded.Show less
4Openpkg
PhpTrustix+1 more
4Openpkg
PhpSecure Linux+1 more
Apr 16, 2026
Jan 10, 2005
N/A· v4
N/A· v3
10.0 HIGH· v2
The deserialization code in PHP before 4.3.10 and PHP 5.x up to 5.0.2 allows remote attackers to cause a denial of service and execute arbitrary code via untrusted data to the unserialize function that may trigger "infor...Show more
The deserialization code in PHP before 4.3.10 and PHP 5.x up to 5.0.2 allows remote attackers to cause a denial of service and execute arbitrary code via untrusted data to the unserialize function that may trigger "information disclosure, double-free and negative reference index array underflow" results.Show less
1Phrozensmoke
1Gyach Enhanced
Apr 16, 2026
Dec 31, 2004
N/A· v4
N/A· v3
5.0 MEDIUM· v2
Unspecified vulnerability in Gyach Enhanced (Gyach-E) before 1.0.4 allows remote attackers to cause a denial of service (crash) via conference packets with error messages.
1Eudora
1Eudora
Apr 16, 2026
Dec 31, 2004
N/A· v4
N/A· v3
5.8 MEDIUM· v2
Eudora 6.1.0.6 allows remote attackers to obfuscate URLs displayed in the status bar by inserting a large number of characters (e.g. spaces coded as "&#32") in the middle of the URL.
1Id Software
1Quake Ii Server
Apr 16, 2026
Dec 31, 2004
N/A· v4
N/A· v3
5.0 MEDIUM· v2
Quake II server before R1Q2, as used in multiple products, allows remote attackers to cause a denial of service (exhaustion of connection slots) via a large number of connections from the same IP address.
1Id Software
1Quake Ii Server
Apr 16, 2026
Dec 31, 2004
N/A· v4
N/A· v3
5.0 MEDIUM· v2
Quake II server before R1Q2, as used in multiple products, allows remote attackers to cause a denial of service (application crash) via a modified client that asks the server to send data stored at a negative array offse...Show more
Quake II server before R1Q2, as used in multiple products, allows remote attackers to cause a denial of service (application crash) via a modified client that asks the server to send data stored at a negative array offset, which is not handled when processing Configstrings and Baselines.Show less
1Solarwinds
1Serv U File Server
Apr 16, 2026
Dec 31, 2004
N/A· v4
N/A· v3
5.0 MEDIUM· v2
Serv-U FTP Server 4.1 (possibly 4.0) allows remote attackers to cause a denial of service (application crash) via a SITE CHMOD command with a "\\...\" followed by a short string, causing partial memory corruption, a diff...Show more
Serv-U FTP Server 4.1 (possibly 4.0) allows remote attackers to cause a denial of service (application crash) via a SITE CHMOD command with a "\\...\" followed by a short string, causing partial memory corruption, a different vulnerability than CVE-2004-2111.Show less
1Skype Technologies
1Skype
Apr 16, 2026
Dec 31, 2004
N/A· v4
N/A· v3
5.0 MEDIUM· v2
A "range check error" in Skype for Windows before 0.98.0.28 allows local and remote attackers to cause a denial of service (application crash) via long command line arguments or a long callto:// URL, a different vulnerab...Show more
A "range check error" in Skype for Windows before 0.98.0.28 allows local and remote attackers to cause a denial of service (application crash) via long command line arguments or a long callto:// URL, a different vulnerability than CVE-2004-1114.Show less
1Tiki
1Tikiwiki Cms/groupware
Apr 16, 2026
Dec 31, 2004
N/A· v4
N/A· v3
7.5 HIGH· v2
TikiWiki before 1.8.4.1 does not properly verify uploaded images, which could allow remote attackers to upload and execute arbitrary PHP scripts, a different vulnerability than CVE-2005-0200.
1Monkey Project
1Monkey
Apr 16, 2026
Nov 23, 2004
N/A· v4
N/A· v3
5.0 MEDIUM· v2
The get_real_string function in Monkey HTTP Daemon (monkeyd) 0.8.1 and earlier allows remote attackers to cause a denial of service (crash) via an HTTP request with a sequence of "%" characters and a missing Host field.
1Cisco
1Ios
Apr 16, 2026
Nov 23, 2004
N/A· v4
N/A· v3
4.7 MEDIUM· v2
Cisco 6000, 6500, and 7600 series systems with Multilayer Switch Feature Card 2 (MSFC2) and a FlexWAN or OSM module allow local users to cause a denial of service (hang or reset) by sending a layer 2 frame packet that en...Show more
Cisco 6000, 6500, and 7600 series systems with Multilayer Switch Feature Card 2 (MSFC2) and a FlexWAN or OSM module allow local users to cause a denial of service (hang or reset) by sending a layer 2 frame packet that encapsulates a layer 3 packet, but has inconsistent length values with that packet.Show less
1Microsoft
3Exchange Server
Windows Server 2003Windows Xp
Apr 16, 2026
Nov 3, 2004
N/A· v4
N/A· v3
10.0 HIGH· v2
The SMTP (Simple Mail Transfer Protocol) component of Microsoft Windows XP 64-bit Edition, Windows Server 2003, Windows Server 2003 64-bit Edition, and the Exchange Routing Engine component of Exchange Server 2003, allow...Show more
The SMTP (Simple Mail Transfer Protocol) component of Microsoft Windows XP 64-bit Edition, Windows Server 2003, Windows Server 2003 64-bit Edition, and the Exchange Routing Engine component of Exchange Server 2003, allows remote attackers to execute arbitrary code via a malicious DNS response message containing length values that are not properly validated.Show less
1University Of Kansas
1Lynx
Apr 16, 2026
Oct 18, 2004
N/A· v4
N/A· v3
5.0 MEDIUM· v2
Lynx, lynx-ssl, and lynx-cur before 2.8.6dev.8 allow remote attackers to cause a denial of service (infinite loop) via a web page or HTML email that contains invalid HTML including (1) a TEXTAREA tag with a large COLS va...Show more
Lynx, lynx-ssl, and lynx-cur before 2.8.6dev.8 allow remote attackers to cause a denial of service (infinite loop) via a web page or HTML email that contains invalid HTML including (1) a TEXTAREA tag with a large COLS value and (2) a large tag name in an element that is not terminated, as demonstrated by mangleme. NOTE: a followup suggests that the relevant trigger for this issue is the large COLS value.Show less
1Solarwinds
1Serv U File Server
Apr 16, 2026
Sep 11, 2004
N/A· v4
N/A· v3
5.0 MEDIUM· v2
Serv-U FTP server 4.x and 5.x allows remote attackers to cause a denial of service (application crash) via a STORE UNIQUE (STOU) command with an MS-DOS device name argument such as (1) COM1, (2) LPT1, (3) PRN, or (4) AUX...Show more
Serv-U FTP server 4.x and 5.x allows remote attackers to cause a denial of service (application crash) via a STORE UNIQUE (STOU) command with an MS-DOS device name argument such as (1) COM1, (2) LPT1, (3) PRN, or (4) AUX.Show less
1Tiki
1Tikiwiki Cms/groupware
Apr 16, 2026
Apr 12, 2004
N/A· v4
N/A· v3
7.5 HIGH· v2
The image upload feature in Tiki CMS/Groupware (TikiWiki) 1.8.1 and earlier allows remote attackers to upload and possibly execute arbitrary files via the img/wiki_up URL.