CVEvulnerability

CVE-2026-11605

7.5 HIGH Published 2026-07-22 Modified 2026-10-24 Official page ↗
Status
Undergoing Analysis
Published
2026-07-22
Last modified
2026-10-24
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-408

Description

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.

Related

Weakness · CWE (1)

  • CWE-408 Incorrect Behavior Order: Early Amplification weakness

References