Vulnerability · Published Oct 28, 2025 · Assigned by ERIC
CVE-2025-40843Buffer overflow in CodeChecker log command
Medium 5.9
In plain English
A medium-severity stack buffer overflow in CodeChecker from Ericsson. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | codechecker | 6.26.2 | GHSA-5xf2-f6ch-6p8r |
| PyPI | codechecker | 6.26.2 | PYSEC-2025-100 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Ericsson | CodeChecker | 0 – through 6.26.1 |
Weakness: CWE-121 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L