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

Source: https://junglewise.ai/threats/cve-2026-41954-f5-big-ip-sensitive-information-disclosure-in-icontrol-rest-and  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-13. Updated: 2026-06-24  
License: CC BY 4.0 with a link back

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](https://junglewise.ai/threats/technologies/big-ip), [F5 BIG-IP Advanced WAF](https://junglewise.ai/threats/technologies/big-ip-advanced-waf), [F5 Big-Ip Access Policy Manager](https://junglewise.ai/threats/technologies/big-ip-access-policy-manager), [F5 Big-Ip Advanced Firewall Manager](https://junglewise.ai/threats/technologies/big-ip-advanced-firewall-manager), [F5 Big-Ip Local Traffic Manager](https://junglewise.ai/threats/technologies/big-ip-local-traffic-manager). Vendors: [F5](https://junglewise.ai/threats/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

- [https://my.f5.com/manage/s/article/K32950402](https://my.f5.com/manage/s/article/K32950402)

## Related threats

- [F5 BIG-IP privilege escalation in TMUI](https://junglewise.ai/threats/cve-2026-66842-f5-big-ip-privilege-escalation-in-tmui)
- [F5 BIG-IP Configuration utility error message spoofing](https://junglewise.ai/threats/cve-2026-63020-f5-big-ip-configuration-utility-error-message-spoofing)
- [F5 BIG-IP denial of service in HTTP/2 profile memory management](https://junglewise.ai/threats/cve-2026-59762-f5-big-ip-denial-of-service-in-http-2-profile-memory-management)
- [F5 BIG-IP and BIG-IQ incorrect permission assignment in tmsh and iControl REST](https://junglewise.ai/threats/cve-2026-42937-f5-big-ip-and-big-iq-incorrect-permission-assignment-in-tmsh-and)
- [F5 BIG-IP Appliance mode restriction bypass via path traversal](https://junglewise.ai/threats/cve-2026-42930-f5-big-ip-appliance-mode-restriction-bypass-via-path-traversal)