RCE in F5 F5os-A
CVE-2025-61955
A vulnerability exists in F5OS-A and F5OS-C systems that may allow an authenticated attacker with local access to escalate their privileges. A successful exploit may allow the attacker to cross a security boundary. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (14.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 14.9% 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 — versions 1.8.0
- F5 F5os - Appliance — versions 1.8.0, 1.5.0
- F5 F5os-C
- F5 F5os - Chassis — versions 1.8.0, 1.6.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- my.f5.com/manage/s/article/K000156771 (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-61955?
- CVE-2025-61955 is a high-severity vulnerability in F5 F5os-A, classified under Eval Injection. CVSS score: 8.8/10. Published 2025-10-15.
- How severe is CVE-2025-61955?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2025-61955 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.