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.
Published: 2025-05-07
Score: 9.2 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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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

Tue, 21 Oct 2025 18:45:00 +0000

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

Mon, 14 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00123}

 epss

{'score': 0.00164}

Thu, 08 May 2025 13:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

Wed, 07 May 2025 22:15:00 +0000

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'}

Subscriptions

F5 F5os-a F5os-c
cve-icon MITRE

Status: PUBLISHED

Assigner: f5

Published:

Updated: 2026-02-26T18:28:44.047Z

Reserved: 2025-04-23T22:28:26.330Z

Link: CVE-2025-36546

cve-icon Vulnrichment

Updated: 2025-05-08T13:00:23.063Z

cve-icon NVD

Status : Analyzed

Published: 2025-05-07T22:15:19.927

Modified: 2025-10-21T18:42:57.403

Link: CVE-2025-36546

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses