CVE-2025-22891 BIG-IP PEM Vulnerability

What is CVE-2025-22891?

CVE-2025-22891 is a high-severity denial of service vulnerability in F5 Big-Ip Policy Enforcement Manager, published on 5 Feb 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

When BIG-IP PEM Control Plane listener Virtual Server is configured with Diameter Endpoint profile, undisclosed traffic can cause the Virtual Server to stop processing new client connections and an increase in memory resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Weakness: CWE-772

Which versions are affected by CVE-2025-22891?

It affects 1 product.

Products include F5 Big-Ip Policy Enforcement Manager.

How do I fix CVE-2025-22891?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2025-22891 being exploited?

There is no known exploitation of CVE-2025-22891 in the wild and no public exploit code.

Other vulnerabilities in F5 Big-Ip Policy Enforcement Manager

• CVE-2025-35995 BIG-IP PEM vulnerability High 8.7
• CVE-2025-24497 BIG-IP PEM vulnerability High 8.7
• CVE-2024-23982 BIG-IP PEM vulnerability High 7.5
• CVE-2020-5942 Denial of service in BIG-IP (PEM) High 7.5
• CVE-2019-6628 Denial of service in BIG-IP PEM High 7.5

All F5 Big-Ip Policy Enforcement Manager vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-892q-vr75-r4j3, openSUSE-SU-2026:10270-1, openSUSE-SU-2026:20579-1.