CVE-2026-26025
free5GC SMF provides Session Management Function for free5GC, an open-source project for 5th generation (5G) mobile core networks.
Does this matter?
Lower severity and a low EPSS score (0.30%). Track it; it rarely justifies an emergency change on its own.
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).
- CVSS 4.0
- 6.6 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.30% probability · 23th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- free5gc/smf
- Source
- security-advisories@github.com
References
- https://github.com/free5gc/free5gc/issues/807Exploit, Issue Tracking
- https://github.com/free5gc/free5gc/security/advisories/GHSA-vw8r-p7h3-g3xhVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.