CVE-2025-36546

F5OS Appliance Mode vulnerability

Published May 7, 2025 CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-13944 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.
History
Type Values Removed Values Added
First Time appeared F5
F5 f5os-a
F5 f5os-c
CPEs cpe:2.3:o:f5:f5os-a:*:*:*:*:*:*:*:*
cpe:2.3:o:f5:f5os-c:*:*:*:*:*:*:*:*
Vendors & Products F5
F5 f5os-a
F5 f5os-c
Type Values Removed Values Added
Metrics epss

{'score': 0.00123}

epss

{'score': 0.00164}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title F5OS Appliance Mode vulnerability
Weaknesses CWE-863
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.2, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
f5
Published
Updated
Feb 26, 2026, 6:28 PM
Reserved
Apr 23, 2025, 10:28 PM
Status
Analyzed
Published
May 7, 2025, 10:15 PM
Modified
Jun 17, 2026, 9:14 AM