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TI-2026-70061 Aliases CVE-2026-108103

Heap out-of-bounds read in Open5GS PFCP packet parsing

Priority LOW 37CWE-125Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · None · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

Open5GS through 2.8.0 contains a heap out-of-bounds read in ogs_pfcp_parse_dropped_dl_traffic_threshold() (CWE-125). A remote unauthenticated attacker can read past IE buffers by sending short IEs in PFCP Session Establishment or Modification Requests to the UPF on UDP port 8805 with the DLPA and DLBY flags set. The read can potentially crash the UPF.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00387 33rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Open5GSopen5gsup to 2.8.0—No fix listedCNA
  • open5gs VendorOpen5GS Affected up to 2.8.0 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*——Open5GS
  • cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:* Versions — — ·Open5GS

Remediation

The sources list no fixed version for Open5GS.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

  1. 2026-10-09 Threatist record created from CVE-2026-108103
  2. 2026-10-11 Priority changed: MEDIUM → LOW
  3. 2026-10-14 CISA SSVC decision points changed

References

Patch 1

Other 2

  • TI-2024-26883 open5gs v2.6.4 is vulnerable to Buffer Overflow. CVSS 3.1CRITICAL 9.8
  • TI-2024-26882 Open5GS v2.6.4 is vulnerable to Buffer Overflow. CVSS 3.1CRITICAL 9.8
  • TI-2024-22649 Open5GS MME versions <= 2.6.4 contains an assertion that can be remotely triggered via a… CVSS 3.1HIGH 8.6
  • TI-2023-18757 Open5GS MME versions <= 2.6.4 contain a reachable assertion in the `Uplink NAS Transport`… CVSS 3.1HIGH 8.6
  • TI-2023-18755 Open5GS MME version <= 2.6.4 contains an assertion that can be remotely triggered via a… CVSS 3.1HIGH 8.6
  • TI-2023-18754 Open5GS MME versions <= 2.6.4 contain an assertion that can be remotely triggered via a… CVSS 3.1HIGH 8.6
See all 159 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences