CVE-2026-3119

Summary

Under certain conditions, named may crash when processing a correctly signed query containing a TKEY record. The affected code can only be reached if an incoming request has a valid transaction signature (TSIG) from a key declared in the named configuration. This issue affects BIND 9 versions 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, and 9.20.9-S1 through 9.20.20-S1. BIND 9 versions 9.18.0 through 9.18.46 and 9.18.11-S1 through 9.18.46-S1 are NOT affected.

Affected Software

VendorProductVersion RangeStatus
ISCBIND 99.20.0 <= 9.20.20affected
ISCBIND 99.21.0 <= 9.21.19affected
ISCBIND 99.20.9-S1 <= 9.20.20-S1affected
ISCBIND 99.18.0 <= 9.18.46unaffected
ISCBIND 99.18.11-S1 <= 9.18.46-S1unaffected

Weaknesses

  • CWE-617: CWE-617 Reachable Assertion

Workarounds

Remove any TSIG keys that might be used by an attacker.

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References