CVE-2026-42408

MEDIUM

F5 BIG-IP DNS tmsh - Sensitive Information Disclosure

Title source: manual

Description

When BIG-IP DNS is provisioned, a vulnerability exists in an undisclosed TMOS Shell (tmsh) command that may allow a highly privileged authenticated attacker to view sensitive information. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

References (1)

Core 1

Core References

Vendor Advisory vendor-advisory patch

https://my.f5.com/manage/s/article/K000157981

Scores

CVSS v3 4.4

EPSS 0.0001

EPSS Percentile 1.8%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-312

Status published

Products (4)

F5/BIG-IP 16.1.0

F5/BIG-IP 17.1.0 - 17.1.3.1

F5/BIG-IP 17.5.0 - 17.5.1.4

F5/BIG-IP 21.0.0

Published May 13, 2026

Tracked Since May 13, 2026