CVE-2026-11605 — Vulnerability intelligence
isc — bind
Published:
- CVSS
- 7.5
- CISA KEV
- Not listed; not proof of no exploitation
Original source text (not a translation)
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.