CVE-2025-44952: OPEN5GS

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

A missing length check in `ogs_pfcp_subnet_add` function from PFCP library, used by both smf and upf in open5gs 2.7.2 and earlier, allows a local attacker to cause a Buffer Overflow by changing the `session.dnn` field with a value with length greater than 101.

Affected products

• OPEN5GS OPEN5GS: up to and including 2.7.2

Published 2025-06-18. Last modified 2026-06-17.