CVE-2025-65566 Null dereference in n/a
An attacker can crash the UPF process by sending malformed PFCP messages, causing a denial of service for user-plane services.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-65566?
CVE-2025-65566 is a high-severity vulnerability in n/a, published on 18 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A denial-of-service vulnerability exists in the omec-project UPF (pfcpiface component) in version upf-epc-pfcpiface:2.1.3-dev. When the UPF receives a PFCP Session Report Response that is missing the mandatory Cause Information Element, the session report handler dereferences a nil pointer instead of rejecting the malformed message. This triggers a panic and terminates the UPF process. An attacker who can send PFCP Session Report Response messages to the UPF's N4/PFCP endpoint can exploit this flaw to repeatedly crash the UPF and disrupt user-plane services.
Weakness: CWE-476
Which versions are affected by CVE-2025-65566?
It affects 1 product.
Products include Linuxfoundation Upf.
How do I fix CVE-2025-65566?
No fix has been published for CVE-2025-65566 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-65566 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-65566 exists.
Sources
Also known as GHSA-qxmc-xmp5-2rhf.