CVEvulnerability

CVE-2026-3593

9.8 CRITICAL Published 2026-05-20 Modified 2026-08-24 Official page ↗
Status
Modified
Published
2026-05-20
Last modified
2026-08-24
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.4 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
7.4 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H
Weaknesses
CWE-416, CWE-825

Description

A use-after-free vulnerability exists within the DNS-over-HTTPS implementation. This issue affects BIND 9 versions 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, and 9.20.9-S1 through 9.20.22-S1. BIND 9 versions 9.18.0 through 9.18.48 and 9.18.11-S1 through 9.18.48-S1 are NOT affected.

Affected configurations

• isc bind (>= 9.20.0 < 9.20.23) • isc bind (>= 9.21.0 < 9.21.22)

Related

Weakness · CWE (2)

  • CWE-416 Use After Free weakness
  • CWE-825 Expired Pointer Dereference weakness

References