Authenticated privilege escalation
Published May 13, 2026 · Updated May 13, 2026
Command injection in affected F5 BIG-IP releases allows remote authenticated users to gain higher-privileged configuration control. Configuration-object modification reaches a command-processing operation without proper neutralization, but F5 has not disclosed the affected field, parser, or command sink. Exploitation requires at least Resource Administrator rights and can cross that role's configuration boundary.
Summary
What happened
Command injection in affected F5 BIG-IP releases allows remote authenticated users to gain higher-privileged configuration control. Configuration-object modification reaches a command-processing operation without proper neutralization, but F5 has not disclosed the affected field, parser, or command sink. Exploitation requires at least Resource Administrator rights and can cross that role's configuration boundary.
The record
- CVE
- CVE-2026-41953
- Published
- May 13, 2026
- Updated
- May 13, 2026
- Vendor
- F5 Networks
- Product
- BIG-IP
- Classifications
- CWE-77, T1068
- Attack vector
- network
- 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