CVE-2026-108103

MEDIUM 5.3

Open5GS through 2.8.0 Heap Out-of-Bounds Read via PFCP Dropped DL Traffic Threshold IE

CVSS Score

5.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-125
Vendor	open5gs
Product	open5gs
Published	Oct 9, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Affected Versions

open5gs / open5gs

0 ≤ 2.8.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/open5gs/open5gs/commit/88e64fc1f87e0d321364b3bb710ef6a8f274e568 github.com: https://github.com/open5gs/open5gs github.com: https://github.com/open5gs/open5gs/blob/v2.8.0/lib/pfcp/types.c#L484-L516 vulncheck.com: https://www.vulncheck.com/advisories/open5gs-through-2.8.0-heap-out-of-bounds-read-via-pfcp-dropped-dl-traffic-threshold-ie

Credits

Tristan Madani