BIG-IP DNS Cache vulnerability_CVE-2026-39458

7.5 / 10

HIGH

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

Description

When a BIG-IP DNS profile enabled with DNS cache is configured on a virtual server, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Basic Information

ID CVE-2026-39458

Source f5

Published May 13, 2026 at 14:12

Affected Product

Vendor F5

Product BIG-IP

Version 21.1.0

Affected Versions F5 BIG-IP 21.0.0
F5 BIG-IP 17.5.0
F5 BIG-IP 17.1.0
F5 BIG-IP 16.1.0

CWE Classification

CWE-824

References

my.f5.com /manage/s/article/K000160945

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