CVE-2022-3736: ISC BIND

High severity, CVSS 7.5. EPSS: 48.7% chance of exploitation in the next 30 days.

BIND 9 resolver can crash when stale cache and stale answers are enabled, option `stale-answer-client-timeout` is set to a positive integer, and the resolver receives an RRSIG query. This issue affects BIND 9 versions 9.16.12 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.12-S1 through 9.16.36-S1.

Affected products

• ISC BIND: from 9.16.12, before 9.16.37 (fixed in 9.16.37); from 9.18.0, before 9.18.11 (fixed in 9.18.11); from 9.19.0, before 9.19.9 (fixed in 9.19.9); version 9.16.11 only; version 9.16.13 only; version 9.16.14 only; …

Published 2023-01-26. Last modified 2026-06-17.