VULNERABILITY INTELLIGENCE

CVE-2026-3039

CVSS score7.5 HIGH
EPSS probability1.09%
CISA KEVNot currently listed
Published2026-05-20
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

BIND servers that are configured to use TKEY-based authentication via GSS-API tokens are vulnerable to excessive memory consumption when receiving and processing maliciously-constructed packets. Typically these servers will be found in Active Directory integrated DNS deployments and/or Kerberos-secured DNS environments. This issue affects BIND 9 versions 9.0.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.9.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.

Weakness classification

  • security-officer@isc.org: CWE-771
  • 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-770

Primary references