CVE-2025-61955

F5OS vulnerability

State: Published
Severity: 8.5 High
Published: Oct 15, 2025
Updated: Feb 26, 2026
Reserved: Oct 3, 2025

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	8.5 High	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	f5
3.1	8.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H	f5
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	f5

Weaknesses

CWE-95 Improper Neutralization of Directives in Dynamically Evaluated Code

Affected Products

Product	Versions
F5OS - ApplianceF5	1.8.0 to before 1.8.3Affected 1.5.0 to before 1.5.4Affected
F5OS - ChassisF5	1.8.0 to before 1.8.2Affected 1.6.0 to before 1.6.4Affected

References

https://my.f5.com/manage/s/article/K000156771vendor-advisory

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