Summaryinfo

A vulnerability identified as problematic has been detected in F5 BIG-IP up to 16.1.6/17.1.2/17.5.0. This issue affects some unknown processing of the component Traffic Management Microkernel. The manipulation leads to denial of service. This vulnerability is listed as CVE-2025-61951. The attack may be initiated remotely. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in F5 BIG-IP up to 16.1.6/17.1.2/17.5.0. This issue affects some unknown functionality of the component Traffic Management Microkernel. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. The summary by CVE is:

Undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate.  This issue may occur when a Datagram Transport Layer Security (DTLS) 1.2 virtual server is enabled with a Server SSL profile that is configured with a certificate, key, and the SSL Sign Hash set to ANY, and the backend server is enabled with DTLS 1.2 and client authentication.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

The advisory is shared at my.f5.com. The identification of this vulnerability is CVE-2025-61951. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 270599 (F5 Networks BIG-IP : BIG-IP DTLS 1.2 vulnerability (K000151309)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 16.1.6.1, 17.1.3 or 17.5.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (270599). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Firewall Software

Vendor

• F5

Name

• BIG-IP

Version

• 16.1.0
• 16.1.1
• 16.1.2
• 16.1.3
• 16.1.4
• 16.1.5
• 16.1.6
• 17.0
• 17.1
• 17.1.0
• 17.1.1
• 17.1.2
• 17.2
• 17.3
• 17.4
• 17.5.0

License

• commercial

Website

• Vendor: https://f5.com/

CPE 2.3info

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CPE 2.2info

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