TI-2025-24871 Aliases CVE-2025-36546 GHSA-58w9-v93f-h76h

F5OS Appliance Mode vulnerability

MEDIUM 42CWE-863Published 2025-05-07 · Updated 2026-02-26

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: High
Attack requirements: Present
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-863.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00446 39th percentileScored 2026-11-07

Fix Fixed F5OS - Appliance (F5): 1.8.0, 1.5.3F5OS - Chassis (F5): 1.8.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
F5	F5OS - Appliance	1.7.0 to before 1.8.0; 1.5.1 to before 1.5.3	1.8.0, 1.5.3	Patch available	CNA
F5	F5OS - Chassis	1.6.0 to before 1.8.0	1.8.0	Patch available	CNA

F5OS - Appliance VendorF5 Affected 1.7.0 to before 1.8.0; 1.5.1 to before 1.5.3 Fixed in 1.8.0, 1.5.3 Patch available CNA
F5OS - Chassis VendorF5 Affected 1.6.0 to before 1.8.0 Fixed in 1.8.0 Patch available CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:f5:f5os-a::::::::	1.5.1 to before 1.5.3	Vulnerable	F5
cpe:2.3:o:f5:f5os-c::::::::	1.6.0 – 1.6.2	Vulnerable	F5

cpe:2.3:o:f5:f5os-a:*:*:*:*:*:*:*:* Versions 1.5.1 to before 1.5.3 Vulnerable ·F5
cpe:2.3:o:f5:f5os-c:*:*:*:*:*:*:*:* Versions 1.6.0 – 1.6.2 Vulnerable ·F5

Remediation

Fix · CNA F5OS - Appliance (F5) Fixed in 1.8.0, 1.5.3
Fix · CNA F5OS - Chassis (F5) Fixed in 1.8.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2025-05-07
F5 F5OS - Chassis 1.8.0
3 records Highest priority Priority MEDIUM 2 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2025-29017 F5OS vulnerabilityPriority MEDIUM 40
- TI-2025-28455 F5OS-A/C CLI vulnerabilityPriority LOW 37
Show all 3 records →

Timeline

2026-10-02 Threatist record created from CVE-2025-36546
2026-10-03 Alias added: GHSA-58w9-v93f-h76h

References

Advisory 1

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

TI-2002-02356 The Diffie-Hellman Key Agreement Protocol allows remote attackers (from the client side)… CVSS 3.1HIGH 7.5
TI-2025-29017 F5OS vulnerability CVSS 4.0HIGH 8.7
TI-2025-38297 F5OS vulnerability CVSS 4.0HIGH 8.5
TI-2025-35664 F5OS Vulnerability CVSS 4.0HIGH 8.5
TI-2025-28455 F5OS-A/C CLI vulnerability CVSS 4.0HIGH 8.3
TI-2022-20188 F5OS vulnerability CVE-2022-41835 CVSS 3.1HIGH 8.8

See all 16 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences