Exim before 4.99.1, with certain non-default rate-limit configurations, allows a remote heap-based buffer overflow because database records are cast directly to intern…

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Dec 14, 2025 · NIST NVD

   Detected

   Exim before 4.99.1, with certain non-default rate-limit configurations, allows a remote heap-based buffer overflow because database records are cast directly to internal structures without validation.

2. Oct 14, 2026 · NIST NVD

   Updated

   Exim before 4.99.1, with certain non-default rate-limit configurations, allows a remote heap-based buffer overflow because database records are cast directly to internal structures without validation.

Affected

• cpe exim/eximversion unspecified

Sources

• CVE.orgVulnerability recordCVE-2025-67896

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2025-67896

  30-day exploitation probability 0.5%

  first.org
• NIST NVDVulnerability recordCVE-2025-67896

  Exim before 4.99.1, with certain non-default rate-limit configurations, allows a remote heap-based buffer overflow because database records are cast directly to internal structures without validation.

  nvd.nist.gov

References

• Mailing List · openwall.com
• Mailing List · openwall.com
• Vendor Advisory · exim.org
• Vendor Advisory · exim.org
• Mailing List · openwall.com