VULNERABILITY INTELLIGENCE

CVE-2026-1519

CVSS score7.5 HIGH
EPSS probability1.69%
CISA KEVNot currently listed
Published2026-03-25
Last modified2026-09-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

If a BIND resolver is performing DNSSEC validation and encounters a maliciously crafted zone, the resolver may consume excessive CPU. Authoritative-only servers are generally unaffected, although there are circumstances where authoritative servers may make recursive queries (see: https://kb.isc.org/docs/why-does-my-authoritative-server-make-recursive-queries). This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.46, 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.46-S1, and 9.20.9-S1 through 9.20.20-S1.

Weakness classification

  • security-officer@isc.org: CWE-606
  • 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-770

Primary references