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TI-2025-27277 Aliases CVE-2025-40843GHSA-5xf2-f6ch-6p8r

Buffer overflow in CodeChecker log command

Priority HIGH 67CWE-121Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-121 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00192 8th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed codechecker (PyPI): 6.26.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
EricssonCodeCheckerup to 6.26.1—No fix listedCNA
—codechecker (PyPI)before 6.26.26.26.2Patch availableGHSA-5xf2-f6ch-6p8r
  • CodeChecker VendorEricsson Affected up to 6.26.1 Fixed in — No fix listed CNA
  • codechecker (PyPI) Vendor— Affected before 6.26.2 Fixed in 6.26.2 Patch available GHSA-5xf2-f6ch-6p8r

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:ericsson:codechecker:*:*:*:*:*:*:*:*before 6.26.2VulnerableEricsson
  • cpe:2.3:a:ericsson:codechecker:*:*:*:*:*:*:*:* Versions before 6.26.2 Vulnerable ·Ericsson

Remediation

  • Fix · GHSA-5xf2-f6ch-6p8r codechecker (PyPI) Fixed in 6.26.2 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-40843
  2. 2026-10-03 Alias added: GHSA-5xf2-f6ch-6p8r

References

Exploit 1

Advisory 1

Other 3

  • TI-2024-09344 Authentication bypass in Ericsson CodeChecker CVSS 3.1CRITICAL 10.0
  • TI-2024-36027 Cross-Site Request Forgery in CodeChecker API CVSS 3.1HIGH 8.2
  • TI-2023-27200 Path traversal in `CodeChecker server` in the endpoint of `CodeChecker store` CVSS 3.1MEDIUM 6.5
  • TI-2026-20759 Authentication bypass for certain API calls CVSS 4.0CRITICAL 9.3
  • TI-2024-09345 Authentication bypass in Ericsson CodeChecker CVSS 3.1CRITICAL 9.0
  • TI-2021-19910 In Ericsson CodeChecker through 6.18.0, a Stored Cross-site scripting (XSS) vulnerability… CVSS 3.1MEDIUM 6.1
See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences