Red Hat Security Advisory

RHSA-2025:22168

bind9.16 security update

Released 2025-11-26 · Red Hat rating Important · View on Red Hat →

Fixed in

Red Hat Enterprise Linux AppStream AUS (v.8.6) bind9.16-32:9.16.23-0.7.el8_6.9, bind9.16-chroot-32:9.16.23-0.7.el8_6.9, bind9.16-libs-32:9.16.23-0.7.el8_6.9 +2
Red Hat Enterprise Linux AppStream E4S (v.8.6) bind9.16-32:9.16.23-0.7.el8_6.9, bind9.16-chroot-32:9.16.23-0.7.el8_6.9, bind9.16-libs-32:9.16.23-0.7.el8_6.9 +2
Red Hat Enterprise Linux AppStream TUS (v.8.6) bind9.16-32:9.16.23-0.7.el8_6.9, bind9.16-chroot-32:9.16.23-0.7.el8_6.9, bind9.16-libs-32:9.16.23-0.7.el8_6.9 +2

Fixes 3 records

TI-2025-27240 CVE-2025-40778 · GHSA-xmqp-6cj2-2hh3

Cache poisoning attacks with unsolicited RRs

HIGH 76

Under certain circumstances, BIND is too lenient when accepting records from answers, allowing an attacker to inject forged data into the cache.

CVSS 3.1HIGH 8.6 Network No auth No interaction EPSS 0.00667 Published 2025-10-22 Fixed CWE-349

TI-2025-27242 CVE-2025-40780 · GHSA-j3w4-m6qj-vmm5

Cache poisoning due to weak PRNG

MEDIUM 44

In specific circumstances, due to a weakness in the Pseudo Random Number Generator (PRNG) that is used, it is possible for an attacker to predict the source port and query ID that BIND will use.

CVSS 3.1HIGH 8.6 Network No auth No interaction EPSS 0.00466 Published 2025-10-22 Fixed CWE-341

TI-2021-07480 CVE-2021-25220 · GHSA-v8rf-mvwx-cx29

DNS forwarders - cache poisoning vulnerability

LOW 36

BIND 9.11.0 -> 9.11.36 9.12.0 -> 9.16.26 9.17.0 -> 9.18.0 BIND Supported Preview Editions: 9.11.4-S1 -> 9.11.36-S1 9.16.8-S1 -> 9.16.26-S1 Versions of BIND 9 earlier than those shown - back to 9.1.0, including Supported…

CVSS 3.1MEDIUM 6.8 Network High privileges No interaction EPSS 0.0345 Published 2022-03-23 Fixed CWE-444