CVE-2025-65559 Denial of service in n/a
A remote attacker can crash the Open5GS User Plane Function by sending a malformed PFCP Session Establishment Request with mismatched TEID flags.
- 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-2025-65559?
CVE-2025-65559 is a high-severity denial of service vulnerability in Open5gs Open5gs, published on 18 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered in Open5GS 2.7.5-49-g465e90f, when processing a PFCP Session Establishment Request (type=50), the UPF crashes with a reachable assertion in `lib/pfcp/context.c` (`ogs_pfcp_object_teid_hash_set`) if the CreatePDR?PDI?F-TEID has CH=1 and the F-TEID address-family flag(s) (IPv4/IPv6) do not match the GTP-U resource family configured for the selected DNN (Network Instance), resulting in a denial of service.
Weakness: CWE-617
Which versions are affected by CVE-2025-65559?
It affects 1 product.
Products include Open5gs Open5gs.
How do I fix CVE-2025-65559?
No fix has been published for CVE-2025-65559 yet. Limit exposure of the affected software until one is available.
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-2025-65559 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-65559 exists.
Other vulnerabilities in Open5gs Open5gs
Sources
Also known as GHSA-vpvv-3968-xxmc.