CVE-2026-41954: F5 BIG-IP sensitive information disclosure in iControl REST and tmsh

CVE-2026-41954 · Severity: medium · CVSS 4.9 · Published 2026-05-13

A vulnerability in F5 BIG-IP networking devices could allow an authorized administrator to view sensitive system information they should not have access to. This issue affects the management interface and command-line tools used to configure the device. While an exploit requires existing administrative credentials, it could lead to the exposure of internal configuration details or other protected data.

Technologies: F5 BIG-IP, F5 BIG-IP Advanced WAF, F5 Big-Ip Access Policy Manager, F5 Big-Ip Advanced Firewall Manager, F5 Big-Ip Local Traffic Manager. Vendors: F5.

Quick answers

Is CVE-2026-41954 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-41954 being exploited in the wild.
How severe is CVE-2026-41954?
Medium severity, with a CVSS score of 4.9, published 13 May 2026.
Which products and versions are affected?
F5 BIG-IP All versions prior to EoTS (End of Technical Support); F5 BIG-IP Advanced WAF 16.1.0-16.1.6, 17.5.0-17.5.1, 21.0.0; F5 Big-Ip Access Policy Manager 16.1.0-16.1.6, 17.5.0-17.5.1, 21.0.0; F5 Big-Ip Advanced Firewall Manager 16.1.0-16.1.6, 17.5.0-17.5.1, 21.0.0; and 1 more.
Is there a fix for CVE-2026-41954?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-41954 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-41954?
Check whether you run F5 BIG-IP, F5 BIG-IP Advanced WAF, F5 Big-Ip Access Policy Manager or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A sensitive information disclosure vulnerability (CWE-200) exists in an undisclosed iControl REST endpoint and the TMOS Shell (tmsh) command within F5 BIG-IP. The flaw allows an authenticated attacker assigned the 'resource administrator' role to bypass intended access restrictions and view sensitive information. The attack vector is network-based via the management interface, but requires high privileges (PR:H) to execute. Affected versions include the 16.1.x and 17.5.x branches, as well as version 21.0.0. F5 has released advisory K32950402 regarding this issue.

Affected products

  • F5 BIG-IP Access Policy Manager 16.1.0-16.1.6, 17.5.0-17.5.1, 21.0.0
  • F5 BIG-IP Advanced Firewall Manager 16.1.0-16.1.6, 17.5.0-17.5.1, 21.0.0
  • F5 BIG-IP Advanced WAF 16.1.0-16.1.6, 17.5.0-17.5.1, 21.0.0
  • F5 BIG-IP Local Traffic Manager 16.1.0-16.1.6, 17.5.0-17.5.1, 21.0.0

Timeline

  • 2026-05-13: disclosed: Initial publication date
  • 2026-05-13: advisory: F5 published advisory K32950402

References

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