CVE-2025-43878: F5 f5os-A

Medium severity, CVSS 6.0. EPSS: 0.2% chance of exploitation in the next 30 days.

When running in Appliance mode, an authenticated attacker assigned the Administrator or Resource Administrator role may be able to bypass Appliance mode restrictions utilizing system diagnostics tcpdump command utility on a F5OS-C/A system.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected products

• F5 f5os-A: from 1.5.1, before 1.8.0 (fixed in 1.8.0)
• F5 f5os-C: from 1.6.0, up to and including 1.6.2

Published 2025-05-07. Last modified 2026-06-17.