Privilege escalation via undisclosed tmsh command
Published May 13, 2026 · Updated May 13, 2026
Privilege escalation in affected F5 BIG-IP releases allows local users with administrative roles to run arbitrary system commands. F5 has not disclosed the affected tmsh command or the permission operation that fails to enforce the intended privilege boundary. Exploitation requires authenticated tmsh access with a resource administrator or administrator role; Appliance mode permits a security-boundary crossing, while no availability loss is reported.
Summary
What happened
Privilege escalation in affected F5 BIG-IP releases allows local users with administrative roles to run arbitrary system commands. F5 has not disclosed the affected tmsh command or the permission operation that fails to enforce the intended privilege boundary. Exploitation requires authenticated tmsh access with a resource administrator or administrator role; Appliance mode permits a security-boundary crossing, while no availability loss is reported.
The record
- CVE
- CVE-2026-41217
- Published
- May 13, 2026
- Updated
- May 13, 2026
- Vendor
- F5 Networks
- Product
- BIG-IP
- Classifications
- CWE-732, T1068
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- May 13, 2026CVE publishedPublication date reported by the CVE source.
- May 13, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=16.1.0 <*
- Affected versionversion=17.1.0 <17.1.3.2
- Affected versionversion=17.5.0 <17.5.1.6
- Affected versionversion=21.0.0 <21.0.0.2
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo