CVE-2026-11605

ADVISORY - debian

Summary

The issue is a resource exhaustion vulnerability associated with DNSSEC validation. BIND always validates all RRSIG records in an answer, even if they are not strictly needed. A query to an authoritative server/zone which returns many valid but superfluous RRSIG records causes the validator to waste disproportionate CPU time. This issue affects BIND 9 versions 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, and 9.20.9-S1 through 9.20.24-S1.

bind9 1:9.20.26-1 https://kb.isc.org/docs/cve-2026-11605

EPSS Score⁠: 0.00524 (0.413)

Common Weakness Enumeration (CWE)

ADVISORY - redhat

CWE-400⁠

Uncontrolled Resource Consumption

Impacted images

Advisories

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