Command Bypass in BIG-IP Systems from F5 Networks
CVE-2025-61958

8.5HIGH

Key Information:

Vendor

F5
Status
Big-ip
Vendor
CVE Published:
15 October 2025

What is CVE-2025-61958?

A security flaw exists in the iHealth command of F5 BIG-IP systems that allows authenticated attackers with a resource administrator role to bypass tmsh restrictions. This vulnerability can potentially enable them to access a bash shell, leading to unauthorized operations within the system. Particularly concerning is the ability for an attacker to cross established security boundaries when exploiting this issue on BIG-IP systems configured in Appliance mode.

Affected Version(s)

BIG-IP 17.5.0 < 17.5.1.1

BIG-IP 17.1.0 < 17.1.3

BIG-IP 16.1.0 < 16.1.6.1

References

https://my.f5.com/manage/s/article/K000154647
vendor-advisory

CVSS V4

Score:
8.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

F5 acknowledges Australian Cyber Security Centre for bringing this issue to our attention and following the highest standards of coordinated disclosure.
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CVE-2025-61958 : Command Bypass in BIG-IP Systems from F5 Networks