CVE-2022-41787: BIG-IP DNS Express vulnerability CVE-2022-41787

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-10-19 · updated 2026-06-17
Weakness: CWE-476

Description

In BIG-IP versions 17.0.x before 17.0.0.1, 16.1.x before 16.1.3.1, 15.1.x before 15.1.6.1, 14.1.x before 14.1.5.1, and 13.1.x before 13.1.5.1, when DNS profile is configured on a virtual server with DNS Express enabled, undisclosed DNS queries with DNSSEC can cause TMM to terminate.

Affected products

F5 BIG-IP DNS: from 13.1.0 before 13.1.5.1; from 14.1.0 before 14.1.5.1; from 15.1.0 before 15.1.6.1; from 16.1.0 before 16.1.3.1; from 17.0.0 before 17.0.0.1 — fixed in 13.1.5.1, 14.1.5.1, 15.1.6.1, 16.1.3.1, 17.0.0.1
F5 BIG-IP (LTM): from 13.1.0 before 13.1.5.1; from 14.1.0 before 14.1.5.1; from 15.1.0 before 15.1.6.1; from 16.1.0 before 16.1.3.1; from 17.0.0 before 17.0.0.1 — fixed in 13.1.5.1, 14.1.5.1, 15.1.6.1, 16.1.3.1, 17.0.0.1

How to fix

Upgrade to a fixed version: F5 BIG-IP DNS 13.1.5.1, 14.1.5.1, 15.1.6.1, 16.1.3.1; F5 BIG-IP (LTM) 13.1.5.1, 14.1.5.1, 15.1.6.1, 16.1.3.1. Check the vendor advisory for mitigations.

References

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