CVEvulnerability

CVE-2026-1519

7.5 HIGH Published 2026-03-25 Modified 2026-09-17 Official page ↗
Status
Modified
Published
2026-03-25
Last modified
2026-09-17
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
CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-606, CWE-770

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.

Affected configurations

• isc bind (>= 9.11.0 <= 9.16.50) • isc bind (>= 9.18.0 < 9.18.47) • isc bind (>= 9.20.0 < 9.20.21) • isc bind (>= 9.21.0 < 9.21.20)

Related

Weakness · CWE (2)

  • CWE-606 Unchecked Input for Loop Condition weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling weakness

References