CVE-2025-40843: codechecker Stack Overflow

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.

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CVSS v3.1 Score

5.9

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Weakness Type (CWE)

CWE-121 CWE-121

Affected Products

Vendor	Product	Versions
ericsson	codechecker	< 6.26.2

References

Advisories & Patches

https://github.com/Ericsson/codechecker/security/advisories/GHSA-5xf2-f6ch-6p8r

Exploits

https://github.com/Ericsson/codechecker/security/advisories/GHSA-5xf2-f6ch-6p8r

Frequently Asked Questions

What is CVE-2025-40843? +

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. It has a CVSS v3.1 base score of 5.9 (MEDIUM).

How severe is CVE-2025-40843? +

CVE-2025-40843 has a CVSS v3.1 score of 5.9 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-40843? +

CVE-2025-40843 affects products from ericsson, specifically: codechecker. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-40843? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2025-40843