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CVE PROGRAM SOURCE RECORD8.6 High

CVE-2025-40776

Birthday Attack against Resolvers supporting ECS

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Status
Published
Published
Updated
Assigning organization
isc

Description

A `named` caching resolver that is configured to send ECS (EDNS Client Subnet) options may be vulnerable to a cache-poisoning attack. This issue affects BIND 9 versions 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.37-S1, and 9.20.9-S1 through 9.20.10-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

  • 9.11.3-S1 to ≤ 9.16.50-S1affected
  • 9.18.11-S1 to ≤ 9.18.37-S1affected
  • 9.20.9-S1 to ≤ 9.20.10-S1affected
  • 9.0.0 to ≤ 9.20.10unaffected

References