What is CVE-2025-40843?

CVE-2025-40843 is a medium-severity vulnerability in Ericsson Codechecker, classified under Stack-based Buffer Overflow. CVSS score: 5.9/10. Published 2025-10-28.

How severe is CVE-2025-40843?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Buffer overflow in Ericsson Codechecker

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 i…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (7.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

Affected products

Ericsson Codechecker — versions 0

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

github.com/Ericsson/codechecker/security/advisories/GHSA-5xf2-f6ch-6p8r (vendor-advisory)

Frequently asked questions

What is CVE-2025-40843?: CVE-2025-40843 is a medium-severity vulnerability in Ericsson Codechecker, classified under Stack-based Buffer Overflow. CVSS score: 5.9/10. Published 2025-10-28.
How severe is CVE-2025-40843?: Medium severity. CVSS v3 base score is 5.9 out of 10.