High severity · published Oct 28, 2025
CVE-2025-40843
Buffer overflow in CodeChecker log command
7.8
CVSS
0.2%
EPSS
No
On KEV
Description
CodeChecker is an analyzer tooling, defect database and viewer extension for the Clang Static Analyzer and Clang Tidy.
CodeChecker versions up to 6.26.1 contain a buffer overflow vulnerability in the internal ldlogger library, which is executed by the CodeChecker log command.
This issue affects CodeChecker: through 6.26.1.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 9% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CO
CodeChecker · Ericsson
through 6.26.1 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-40843
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-40843
Exploit
https://github.com/Ericsson/codechecker/security/advisories/GHSA-5xf2-f6ch-6p8r
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