CVE-2026-108103CWE-125

CVE-2026-108103

Medium · published October 9, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
31.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
6.9 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
EPSS
0.00387 · 31.6th percentile
Weakness
CWE-125 · Out-of-bounds Read
Published
2026-10-09T19:17Z
References (4)
https://github.com/open5gs/open5gs · [email protected]https://github.com/open5gs/open5gs/blob/v2.8.0/lib/pfcp/types.c#L484-L516 · [email protected]https://github.com/open5gs/open5gs/commit/88e64fc1f87e0d321364b3bb710ef6a8f274e568 · [email protected]https://www.vulncheck.com/advisories/open5gs-through-2.8.0-heap-out-of-bounds-read-via-pfcp-dropped-dl-traffic-threshold-ie · [email protected]
EPSS history
Timeline
  • 11 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 09 OCT 14:08Z
    Open5GS through 2.8.0 Heap Out-of-Bounds Read via PFCP Dropped DL Traffic Threshold IE
    cvelistv5
  • 09 OCT 14:08Z
    Open5GS through 2.8.0 Heap Out-of-Bounds Read via PFCP Dropped DL Traffic Threshold IE
    cvelistv5