CVE-2025-13878: ISC BIND 9

High severity, CVSS 7.5. EPSS: 9.2% chance of exploitation in the next 30 days.

Malformed BRID/HHIT records can cause `named` to terminate unexpectedly. This issue affects BIND 9 versions 9.18.40 through 9.18.43, 9.20.13 through 9.20.17, 9.21.12 through 9.21.16, 9.18.40-S1 through 9.18.43-S1, and 9.20.13-S1 through 9.20.17-S1.

Affected products

• ISC BIND 9: from 9.18.40, up to and including 9.18.43; from 9.20.13, up to and including 9.20.17; from 9.21.12, up to and including 9.21.16; from 9.18.40-S1, up to and including 9.18.43-S1; from 9.20.13-S1, up to and including 9.20.17-S1
• Red Hat Red Hat Enterprise Linux 10
• Red Hat Red Hat Enterprise Linux 6
• Red Hat Red Hat Enterprise Linux 7
• Red Hat Red Hat Enterprise Linux 8
• Red Hat Red Hat Enterprise Linux 9
• Red Hat Red Hat Hardened Images: before 9.18.48-1.hum1 (fixed in 9.18.48-1.hum1)
• Red Hat Red Hat Openshift Container Platform 4

Published 2026-01-21. Last modified 2026-09-01.