CVE-2025-29339 Denial of service in n/a
Attackers can crash the Open5GS UPF daemon by sending a malformed PFCP Session Establishment Request, causing a denial of service.
- 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-2025-29339?
CVE-2025-29339 is a high-severity denial of service vulnerability in Open5gs Open5gs, published on 22 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue in UPF in Open5GS UPF versions up to v2.7.2 results an assertion failure vulnerability in PFCP session parameter validation. When processing a PFCP Session Establishment Request with PDN Type=0, the UPF fails to handle the invalid value propagated from SMF (or via direct attack), triggering a fatal assertion check and causing a daemon crash.
Weakness: CWE-617
Which versions are affected by CVE-2025-29339?
It affects 1 product.
Products include Open5gs Open5gs.
How do I fix CVE-2025-29339?
No fix has been published for CVE-2025-29339 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-2025-29339 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-29339 exists.
Other vulnerabilities in Open5gs Open5gs
Sources
Also known as GHSA-v7m9-pm9f-frqg.