CVE-2026-108103: OPEN5GS

Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days.

Open5GS through 2.8.0 contains a heap out-of-bounds read vulnerability in ogs_pfcp_parse_dropped_dl_traffic_threshold() that allows remote unauthenticated attackers to read past IE buffers via short IEs. Attackers can send PFCP Session Establishment or Modification Requests to the UPF on UDP port 8805 with DLPA and DLBY flags set, potentially crashing the UPF.

Affected products

• OPEN5GS OPEN5GS: up to and including 2.8.0

Published 2026-10-09. Last modified 2026-10-09.