CVE-2025-36546

9.2 criticalEPSS 0.4%

Critical (9.2) in f5. EPSS 0.4% chance of exploitation in the next 30 days.

On an F5OS system, if the root user had previously configured the system to allow login via SSH key-based authentication, and then enabled Appliance Mode; access via SSH key-based authentication is still allowed. For an attacker to exploit this vulnerability they must obtain the root user's SSH private key. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Severity

CVSS 4.0

9.2 critical

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

8.1 high

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 38% of CVEs (scores of 2026-10-31)
CWE: CWE-863
Published: 2025-05-07
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

f5:f5os-a
f5:f5os-c

References

https://my.f5.com/manage/s/article/K000140574

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