CVE-2026-41959 iControl and tmsh REST vulnerability

What is CVE-2026-41959?

CVE-2026-41959 is a high-severity vulnerability in F5 Big-Ip Access Policy Manager, published on 13 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Incorrect permission assignment vulnerabilities exist in BIG-IP and BIG-IQ TMOS Shell (tmsh) network diagnostics commands and in BIG-IP iControl REST. These vulnerabilities may allow an authenticated attacker to view the network status of destination systems.

 Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Weakness: CWE-732

Which versions are affected by CVE-2026-41959?

It affects 22 products.

Products include F5 Big-Ip Access Policy Manager, F5 Big-Ip Advanced Firewall Manager, F5 Big-Ip Advanced Web Application Firewall, F5 Big-Ip Analytics, F5 Big-Ip Application Acceleration Manager, F5 Big-Ip Application Security Manager and 16 more.

How do I fix CVE-2026-41959?

No fix has been published for CVE-2026-41959 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-41959 being exploited?

There is no known exploitation of CVE-2026-41959 in the wild and no public exploit code.

Other vulnerabilities in F5 Big-Ip Access Policy Manager

• CVE-2023-46747 F5 BIG-IP Configuration Utility Authentication Bypass Exploited Critical 9.8
• CVE-2022-1388 F5 BIG-IP Missing Authentication Exploited Critical 9.8
• CVE-2021-22986 F5 BIG-IP and BIG-IQ Centralized Management iControl REST Remote Code Execution Exploited Critical 9.8
• CVE-2021-22991 F5 BIG-IP Traffic Management Microkernel Buffer Overflow Exploited Critical 9.8
• CVE-2020-5902 F5 BIG-IP Traffic Management User Interface (TMUI) Remote Code Execution Exploited Critical 9.8

All F5 Big-Ip Access Policy Manager vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-qxf3-7mw3-hq68.