CVE-2026-42408

BIG-IP DNS tmsh vulnerability

State: Published
Severity: 6.7 Medium
Published: May 13, 2026
Updated: May 13, 2026
Reserved: Apr 30, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	6.7 Medium	CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N	f5
3.1	4.4 Medium	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N	f5

Weaknesses

CWE-312 Cleartext Storage of Sensitive Information

Affected Products

Product	Versions
BIG-IPF5	21.0.0 and laterNot affected 17.5.0 to before 17.5.1.4Affected 17.1.0 to before 17.1.3.1Affected 16.1.0 and laterAffected

References

https://my.f5.com/manage/s/article/K000157981vendor-advisorypatch

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