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CVE PROGRAM SOURCE RECORD8.1 High

CVE-2026-94300

Concurrent GSS-TSIG messages corrupt memory

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Status
Published
Published
Updated
Assigning organization
isc

Description

Replaying GSS-TSIG signed UDP messages can result in memory corruption in "`named`". An attacker who can capture a previously signed UDP message can replay it while the negotiated TSIG key is still valid. By also sending crafted queries to a zone the attacker controls, the attacker may potentially achieve remote code execution. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.29, 9.21.0 through 9.21.26, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.29-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

  • 9.11.0 to ≤ 9.18.50affected
  • 9.20.0 to ≤ 9.20.29affected
  • 9.21.0 to ≤ 9.21.26affected
  • 9.11.3-S1 to ≤ 9.18.50-S1affected
  • 9.20.9-S1 to ≤ 9.20.29-S1affected

References