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CWE-457

Use of Uninitialized Variable

The code uses a variable that has not been initialized, leading to unpredictable or unintended results.

207
Assigned CVEs
123rd
Commonality Rank
6.7
Avg CVSS
0.5%
In CISA KEV

Volume and Severity of Assigned CVEs Over Time

Volume of CVEs assigned to CWE-457 and their average CVSS base score over time.

Volume of CVEsAvg CVSS Base Score
First CVE
Jul 29, 2009
16 years ago
Most Recent CVE
Jul 22, 2026
2 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.

207 CVEs · Highest risk first

CVEPublishedCVSSRiskKEVExploit
CVE-2025-5777HIGH
Insufficient input validation leading to memory overread when the NetScaler is configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server
Jun 17, 20257.598YESYES
CVE-2009-0901HIGH
The Active Template Library (ATL) in Microsoft Visual Studio .NET 2003 SP1, Visual Studio 2005 SP1 and 2008 Gold, and Visual C++ 2005 SP1 and 2008 Gold and SP1; and Windows 2000 SP
Jul 29, 20098.844NONO
CVE-2026-14405CRITICAL
Uninitialized Use in V8 in Google Chrome prior to 150.0.7871.46 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security sev
Jul 1, 20269.639NONO
CVE-2026-14413HIGH
Uninitialized Use in ANGLE in Google Chrome prior to 150.0.7871.46 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a
Jul 1, 20268.336NONO
CVE-2026-13825HIGH
Uninitialized Use in Dawn in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security sever
Jun 30, 20268.836NONO
CVE-2026-15132HIGH
Uninitialized Use in V8 in Google Chrome prior to 150.0.7871.115 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security se
Jul 8, 20268.835NONO
CVE-2026-6748CRITICAL
Uninitialized memory in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
Apr 21, 20269.834NONO
CVE-2025-56364HIGH
A use of uninitialized value vulnerability exists in the Matter SDK (connectedhomeip) before 1.4.0, where the `GetDestinationGroupId().Value()` method is called without first check
Jul 14, 20267.533NONO
CVE-2026-9972HIGH
Uninitialized Use in Gamepad in Google Chrome on Mac prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox esc
May 28, 20268.333NONO
CVE-2026-10960HIGH
Uninitialized Use in Codecs in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a
Jun 4, 20268.332NONO
View all 207 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
16%
19%
5.0-5.9
25%
16%
6.0-6.9
31%
26%
7.0-7.9
11%
8.0-8.9
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
1 CVE
0.5% of CVEs· 84th percentile
Metasploit
0 CVEs
0.0% of CVEs· Bottom 1%
Nuclei
1 CVE
0.5% of CVEs· 81st percentile
ExploitDB
1 CVE
0.5% of CVEs· 76th percentile

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