CVE-2026-26025 Null dereference in smf

Medium 6.6 Published 24 Feb 2026 Updated 26 Feb 2026

Attackers can crash the free5GC SMF by sending malformed PFCP messages, causing denial of service in 5G core networks.

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-2026-26025?

CVE-2026-26025 is a medium-severity vulnerability in free5gc smf, published on 24 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

free5GC SMF provides Session Management Function for free5GC, an open-source project for 5th generation (5G) mobile core networks. In versions up to and including 1.4.1, SMF panics and terminates when processing a malformed PFCP SessionReportRequest on the PFCP (UDP/8805) interface. No known upstream fix is available, but some workarounds are available. ACL/firewall the PFCP interface so only trusted UPF IPs can reach SMF (reduce spoofing/abuse surface); drop/inspect malformed PFCP SessionReportRequest messages at the network edge where feasible, and/or add recover() around PFCP handler dispatch to avoid whole-process termination (mitigation only).

Weakness: CWE-476

Which versions are affected by CVE-2026-26025?

It affects 1 product.

Products include Free5gc Smf.

How do I fix CVE-2026-26025?

No fix has been published for CVE-2026-26025 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-26025 being exploited?

There is no known exploitation of CVE-2026-26025 in the wild and no public exploit code.

Sources

Also known as GHSA-vw8r-p7h3-g3xh.