CVE-2026-3039

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.

References

https://kb.isc.org/docs/cve-2026-3039

https://downloads.isc.org/isc/bind9/9.21.22

https://downloads.isc.org/isc/bind9/9.20.23

https://downloads.isc.org/isc/bind9/9.18.49

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3