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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-3039

BIND 9 server memory exhaustion during GSS-API TKEY negotiation

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Status
Published
Published
Updated
Assigning organization
isc

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

ISC BIND 9

Default version status: unaffected

  • 9.0.0 to ≤ 9.16.50affected
  • 9.18.0 to ≤ 9.18.48affected
  • 9.20.0 to ≤ 9.20.22affected
  • 9.21.0 to ≤ 9.21.21affected
  • 9.9.3-S1 to ≤ 9.16.50-S1affected
  • 9.18.11-S1 to ≤ 9.18.48-S1affected
  • 9.20.9-S1 to ≤ 9.20.22-S1affected

References