CVE-2009-0025: ISC BIND

Medium severity, CVSS 6.8. EPSS: 6.9% chance of exploitation in the next 30 days.

BIND 9.6.0, 9.5.1, 9.5.0, 9.4.3, and earlier does not properly check the return value from the OpenSSL DSA_verify function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077.

Affected products

• ISC BIND: version 9.0 only; version 9.0.0 only; version 9.0.1 only; version 9.1 only; version 9.1.0 only; version 9.1.1 only; …

Published 2009-01-07. Last modified 2026-06-16.