What is CVE-2025-61955?

CVE-2025-61955 is a high-severity vulnerability in F5 F5os - Appliance, 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.

RCE in F5 F5os - Appliance

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 version…

EPSS: 0.000 (10.1th percentile) — read the EPSS interpretation.

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.

Affected products

F5 F5os - Appliance — versions 1.8.0, 1.5.0
F5 F5os - Chassis — versions 1.8.0, 1.6.0

Weakness classification (CWE)

CWE-95 — Eval Injection

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

my.f5.com/manage/s/article/K000156771 (vendor-advisory)

Frequently asked questions

What is CVE-2025-61955?: CVE-2025-61955 is a high-severity vulnerability in F5 F5os - Appliance, 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.