Vulnerability in F5 F5os-A
CVE-2025-43878
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.002 (6.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 6.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- F5 F5os-A
- F5 F5os - Appliance — versions 1.5.1
- F5 F5os-C
- F5 F5os - Chassis — versions 1.6.0
- F5 R10600
- F5 R10800
- F5 R10900
- F5 R12600-Ds
- F5 R12800-Ds
- F5 R12900-Ds
Weakness classification (CWE)
References
- my.f5.com/manage/s/article/K000139502 (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-43878?
- CVE-2025-43878 is a medium-severity vulnerability in F5 F5os-A, classified under CWE-149. CVSS score: 6.0/10. Published 2025-05-07.
- How severe is CVE-2025-43878?
- Medium severity. CVSS v3 base score is 6.0 out of 10.