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CWE-20

12,711 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 (12,711)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
1Microsoft
1Internet Explorer
Apr 23, 2026
Aug 13, 2008
N/A· v4
N/A· v3
9.3 HIGH· v2
Microsoft Internet Explorer 6 and 7 does not perform proper "argument validation" during print preview, which allows remote attackers to execute arbitrary code via unknown vectors, aka "HTML Component Handling Vulnerabil...Show more
Microsoft Internet Explorer 6 and 7 does not perform proper "argument validation" during print preview, which allows remote attackers to execute arbitrary code via unknown vectors, aka "HTML Component Handling Vulnerability."Show less
1Microsoft
1Internet Explorer
Apr 23, 2026
Aug 13, 2008
N/A· v4
N/A· v3
9.3 HIGH· v2
Microsoft Internet Explorer 5.01, 6, and 7 does not properly handle objects that have been incorrectly initialized or deleted, which allows remote attackers to cause a denial of service (crash) and execute arbitrary code...Show more
Microsoft Internet Explorer 5.01, 6, and 7 does not properly handle objects that have been incorrectly initialized or deleted, which allows remote attackers to cause a denial of service (crash) and execute arbitrary code via unknown vectors, aka "Uninitialized Memory Corruption Vulnerability."Show less
1Microsoft
5Windows 2000
Windows 2003 ServerWindows Nt+2 more
Apr 23, 2026
Aug 13, 2008
N/A· v4
N/A· v3
9.0 HIGH· v2
The Event System in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP1 and SP2, Vista Gold and SP1, and Server 2008 does not properly validate per-user subscriptions, which allows remote authenticated users to e...Show more
The Event System in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP1 and SP2, Vista Gold and SP1, and Server 2008 does not properly validate per-user subscriptions, which allows remote authenticated users to execute arbitrary code via a crafted event subscription request.Show less
1Microsoft
5Windows 2000
Windows 2003 ServerWindows Nt+2 more
Apr 23, 2026
Aug 13, 2008
N/A· v4
N/A· v3
9.0 HIGH· v2
Array index vulnerability in the Event System in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP1 and SP2, Vista Gold and SP1, and Server 2008 allows remote authenticated users to execute arbitrary code via a...Show more
Array index vulnerability in the Event System in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP1 and SP2, Vista Gold and SP1, and Server 2008 allows remote authenticated users to execute arbitrary code via a crafted event subscription request that is used to access an array of function pointers.Show less
1Ruby Lang
1Ruby
Apr 23, 2026
Aug 13, 2008
N/A· v4
N/A· v3
7.5 HIGH· v2
The dl module in Ruby 1.8.5 and earlier, 1.8.6 through 1.8.6-p286, 1.8.7 through 1.8.7-p71, and 1.9 through r18423 does not check "taintness" of inputs, which allows context-dependent attackers to bypass safe levels and...Show more
The dl module in Ruby 1.8.5 and earlier, 1.8.6 through 1.8.6-p286, 1.8.7 through 1.8.7-p71, and 1.9 through r18423 does not check "taintness" of inputs, which allows context-dependent attackers to bypass safe levels and execute dangerous functions by accessing a library using DL.dlopen.Show less
1Microsoft
1Office
Apr 23, 2026
Aug 12, 2008
N/A· v4
N/A· v3
9.3 HIGH· v2
Array index vulnerability in Microsoft Office Excel 2000 SP3 and 2002 SP3, and Office 2004 and 2008 for Mac allows remote attackers to execute arbitrary code via an Excel file with a crafted array index for a FORMAT reco...Show more
Array index vulnerability in Microsoft Office Excel 2000 SP3 and 2002 SP3, and Office 2004 and 2008 for Mac allows remote attackers to execute arbitrary code via an Excel file with a crafted array index for a FORMAT record, aka the "Excel Index Array Vulnerability."Show less
1Microsoft
2Office
Office Excel Viewer
Apr 23, 2026
Aug 12, 2008
N/A· v4
N/A· v3
9.3 HIGH· v2
Microsoft Office Excel 2000 SP3, 2002 SP3, and 2003 SP2 and SP3; Office Excel Viewer 2003; and Office 2004 and 2008 for Mac do not properly validate index values for AxesSet records when loading Excel files, which allows...Show more
Microsoft Office Excel 2000 SP3, 2002 SP3, and 2003 SP2 and SP3; Office Excel Viewer 2003; and Office 2004 and 2008 for Mac do not properly validate index values for AxesSet records when loading Excel files, which allows remote attackers to execute arbitrary code via a crafted Excel file, aka the "Excel Indexing Validation Vulnerability."Show less
1Microsoft
1Office
Apr 23, 2026
Aug 12, 2008
N/A· v4
N/A· v3
6.6 MEDIUM· v2
Microsoft Office Excel 2007 Gold and SP1 does not properly delete the PWD (password) string from connections.xml when a .xlsx file is configured not to save the remote data session password, which allows local users to o...Show more
Microsoft Office Excel 2007 Gold and SP1 does not properly delete the PWD (password) string from connections.xml when a .xlsx file is configured not to save the remote data session password, which allows local users to obtain sensitive information and obtain access to a remote data source, aka the "Excel Credential Caching Vulnerability."Show less
2Broadcom
Ca
5Host Based Intrusion Prevention System
Internet Security SuiteInternet Security Suite 2008+2 more
Apr 23, 2026
Aug 12, 2008
N/A· v4
N/A· v3
7.2 HIGH· v2
The kmxfw.sys driver in CA Host-Based Intrusion Prevention System (HIPS) r8, as used in CA Internet Security Suite and Personal Firewall, does not properly verify IOCTL requests, which allows local users to cause a denia...Show more
The kmxfw.sys driver in CA Host-Based Intrusion Prevention System (HIPS) r8, as used in CA Internet Security Suite and Personal Firewall, does not properly verify IOCTL requests, which allows local users to cause a denial of service (system crash) or possibly gain privileges via a crafted request.Show less
1Noticeware
1Email Server
Apr 23, 2026
Aug 12, 2008
N/A· v4
N/A· v3
5.0 MEDIUM· v2
The IMAP server in NoticeWare Email Server NG 4.6.3 and earlier allows remote attackers to cause a denial of service (daemon crash) via multiple long LOGIN commands.
1Hydrairc
1Hydrairc
Apr 23, 2026
Aug 10, 2008
N/A· v4
N/A· v3
5.0 MEDIUM· v2
HydraIRC 0.3.164 and earlier allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a long irc:// URI.
1Xerox
1Phaser
Apr 23, 2026
Aug 10, 2008
N/A· v4
N/A· v3
7.8 HIGH· v2
The Xerox Phaser 8400 allows remote attackers to cause a denial of service (reboot) via an empty UDP packet to port 1900.
1Powerdns
2Authoritative Server
Powerdns
Apr 23, 2026
Aug 8, 2008
N/A· v4
N/A· v3
6.4 MEDIUM· v2
PowerDNS Authoritative Server before 2.9.21.1 drops malformed queries, which might make it easier for remote attackers to poison DNS caches of other products running on other servers, a different issue than CVE-2008-1447...Show more
PowerDNS Authoritative Server before 2.9.21.1 drops malformed queries, which might make it easier for remote attackers to poison DNS caches of other products running on other servers, a different issue than CVE-2008-1447 and CVE-2008-3217.Show less
1Realvnc
1Realvnc Windows Client
Apr 23, 2026
Aug 6, 2008
N/A· v4
N/A· v3
5.0 MEDIUM· v2
vncviewer.exe in RealVNC Windows Client 4.1.2.0 allows remote VNC servers to cause a denial of service (application crash) via a crafted frame buffer update packet.
1Americasarmy
1America's Army
Apr 23, 2026
Aug 6, 2008
N/A· v4
N/A· v3
5.0 MEDIUM· v2
America's Army (aka AA or Army Game Project) 2.8.3.1 and earlier allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a crafted UDP packet, probably involving a VoiceIndex value th...Show more
America's Army (aka AA or Army Game Project) 2.8.3.1 and earlier allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a crafted UDP packet, probably involving a VoiceIndex value that is outside of the range specified by VOICE_MAX_CHATTERS.Show less
1Mozilla
1Firefox
Apr 23, 2026
Aug 4, 2008
N/A· v4
N/A· v3
4.3 MEDIUM· v2
The content layout component in Mozilla Firefox 3.0 and 3.0.1 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted but well-formed web page that contains "a...Show more
The content layout component in Mozilla Firefox 3.0 and 3.0.1 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted but well-formed web page that contains "a simple set of legitimate HTML tags."Show less
1Epic Games
1Unreal Tournament 3
Apr 23, 2026
Jul 31, 2008
N/A· v4
N/A· v3
5.0 MEDIUM· v2
Unreal Tournament 3 1.3beta4 and earlier allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a UDP packet in which the value of a certain size field is greater than the to...Show more
Unreal Tournament 3 1.3beta4 and earlier allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a UDP packet in which the value of a certain size field is greater than the total packet length, aka attack 2 in ut3mendo.c.Show less
1Epic Games
1Unreal Tournament 2004
Apr 23, 2026
Jul 31, 2008
N/A· v4
N/A· v3
5.0 MEDIUM· v2
Unreal Tournament 2004 (UT2004) 3369 and earlier allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a certain sequence of malformed packets.
2Giulio Ganci
Wordpress
2Wp Downloads Manager
Wp Downloads Manager
Apr 23, 2026
Jul 30, 2008
N/A· v4
N/A· v3
10.0 HIGH· v2
Unrestricted file upload vulnerability in upload.php in the Giulio Ganci Wp Downloads Manager module 0.2 for WordPress allows remote attackers to execute arbitrary code by uploading a file with an executable extension vi...Show more
Unrestricted file upload vulnerability in upload.php in the Giulio Ganci Wp Downloads Manager module 0.2 for WordPress allows remote attackers to execute arbitrary code by uploading a file with an executable extension via the upfile parameter, then accessing it via a direct request to the file in wp-content/plugins/downloads-manager/upload/.Show less
1Redhat
1Cygwin
Apr 23, 2026
Jul 28, 2008
N/A· v4
N/A· v3
7.6 HIGH· v2
setup.exe before 2.573.2.3 in Cygwin does not properly verify the authenticity of packages, which allows remote Cygwin mirror servers or man-in-the-middle attackers to execute arbitrary code via a package list containing...Show more
setup.exe before 2.573.2.3 in Cygwin does not properly verify the authenticity of packages, which allows remote Cygwin mirror servers or man-in-the-middle attackers to execute arbitrary code via a package list containing the MD5 checksum of a Trojan horse package.Show less