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CWE-758

Reliance on Undefined, Unspecified, or Implementation-Defined Behavior

The product uses an API function, data structure, or other entity in a way that relies on properties that are not always guaranteed to hold for that entity.

27
Assigned CVEs
294th
Commonality Rank
7.0
Avg CVSS
0.0%
In CISA KEV

Volume and Severity of Assigned CVEs Over Time

Volume of CVEs assigned to CWE-758 and their average CVSS base score over time.

Volume of CVEsAvg CVSS Base Score
First CVE
Apr 27, 2023
3 years ago
Most Recent CVE
Jul 21, 2026
3 days ago

Top CVEs Assigned This CWE

Top CVEs that have been assigned this CWE. A single CVE can have multiple CWE assignments, though many have just one.

27 CVEs · Highest risk first

CVEPublishedCVSSRiskKEVExploit
CVE-2026-22858CRITICAL
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, global-buffer-overflow was observed in FreeRDP's Base64 decoding path. The root cause appears to b
Jan 14, 20269.134NONO
CVE-2026-4705CRITICAL
Undefined behavior in the WebRTC: Signaling component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
Mar 24, 20269.832NONO
CVE-2026-24409HIGH
iccDEV provides libraries and tools for interacting with, manipulating, and applying ICC color management profiles. Versions 2.3.1.1 and below have Undefined Behavior and Null Poin
Jan 24, 20268.831NONO
CVE-2026-16441MEDIUM
In Eclipse OpenJ9 versions up to 0.60, when executing class files where a previously concrete superclass method has been recompiled as abstract, execution is incorrectly delegated
Jul 21, 20266.928NONO
CVE-2026-4724CRITICAL
Undefined behavior in the Audio/Video component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
Mar 24, 20269.128NONO
CVE-2026-24411HIGH
iccDEV provides libraries and tools for interacting with, manipulating, and applying ICC color management profiles. Versions 2.3.1.1 and below have Undefined Behavior in CIccTagXml
Jan 24, 20268.828NONO
CVE-2026-24410HIGH
iccDEV provides libraries and tools for interacting with, manipulating, and applying ICC color management profiles. Versions 2.3.1.1 and below have Undefined Behavior and Null Poin
Jan 24, 20268.828NONO
CVE-2026-24407HIGH
iccDEV provides libraries and tools for interacting with, manipulating, and applying ICC color management profiles. Versions 2.3.1.1 and below have Undefined Behavior in icSigCalcO
Jan 24, 20268.828NONO
CVE-2026-24404HIGH
iccDEV provides libraries and tools for interacting with, manipulating, and applying ICC color management profiles. In versions 2.3.1.1 and below, CIccXmlArrayType() contains a Nul
Jan 24, 20268.828NONO
CVE-2026-21677HIGH
iccDEV provides a set of libraries and tools for working with ICC color management profiles. Versions 2.3.1 and below have Undefined Behavior in its CIccCLUT::Init function which i
Jan 6, 20268.828NONO
View all 27 CVEs →

CVE Severity & Scoring

This CWEGlobal (All CVEs)
0.0-0.9
1.0-1.9
2.0-2.9
3.0-3.9
10%
4.0-4.9
19%
19%
5.0-5.9
16%
6.0-6.9
19%
26%
7.0-7.9
30%
11%
8.0-8.9
11%
14%
9.0-10.0
unknown
CVSS Score Range

Exploit Exposure

Exploit activity across CVEs assigned to this CWE, including CVEs that carry other CWE assignments.

CISA KEV
0 CVEs
0.0% of CVEs· Bottom 1%
Metasploit
0 CVEs
0.0% of CVEs· Bottom 1%
Nuclei
0 CVEs
0.0% of CVEs· Bottom 1%
ExploitDB
0 CVEs
0.0% of CVEs· Bottom 1%

Social Chatter

Social posts that mention CVE IDs assigned to this CWE. This is assigned-CVE activity, not mentions of the CWE label itself.

Media Mentions

Media articles that mention CVE IDs assigned to this CWE. This is assigned-CVE coverage, not mentions of the CWE label itself.

Top Affected Vendors

Top Affected Products