RCE in F5 Big-ip
CVE-2026-42924
An authenticated attacker with the Resource Administrator or Administrator role can create SNMP configuration objects through iControl SOAP resulting in privilege escalation. Note: Software versions which have reached End of Technical Sup…
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.002 (16.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N.
Affected products
- F5 Big-ip — versions 21.1.0, 21.0.0, 17.5.0
- F5 Big-ip_access_policy_manager — versions 21.0.0
- F5 Big-ip_advanced_firewall_manager — versions 21.0.0
- F5 Big-ip_advanced_web_application_firewall — versions 21.0.0
- F5 Big-ip_analytics — versions 21.0.0
- F5 Big-ip_application_acceleration_manager — versions 21.0.0
- F5 Big-ip_application_security_manager — versions 21.0.0
- F5 Big-ip_application_visibility_and_reporting — versions 21.0.0
- F5 Big-ip_automation_toolchain — versions 21.0.0
- F5 Big-ip_carrier-grade_nat — versions 21.0.0
Weakness classification (CWE)
References
- f5sirt@f5.com (vendor-advisory, Mitigation, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-42924?
- CVE-2026-42924 is a high-severity vulnerability in F5 Big-ip, classified under OS Command Injection. CVSS score: 8.7/10. Published 2026-05-13.
- How severe is CVE-2026-42924?
- High severity. CVSS v3 base score is 8.7 out of 10.