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Permalink CVE-2026-1738

5.3 MEDIUM

CVSS version: 3.1
Attack vector (AV):
Attack complexity (AC):
Privileges required (PR):
User interaction (UI):
Scope (S):
Confidentiality impact (C):
Integrity impact (I):
Availability impact (A):

created 2 months, 1 week ago

Open5GS SGWC context.c sgwc_tunnel_add assertion

A flaw has been found in Open5GS up to 2.7.6. The impacted element is the function sgwc_tunnel_add of the file /src/sgwc/context.c of the component SGWC. Executing a manipulation of the argument pdr can lead to reachable assertion. The attack can be executed remotely. The exploit has been published and may be used. It is advisable to implement a patch to correct this issue. The issue report is flagged as already-fixed.

References

VDB-343637 | Open5GS SGWC context.c sgwc_tunnel_add assertion vdb-entrytechnical-description
VDB-343637 | CTI Indicators (IOB, IOC, IOA) signaturepermissions-required
Submit #741193 | Open5gs SGWC v2.7.6 Denial of Service third-party-advisory
https://github.com/open5gs/open5gs/issues/4261 issue-tracking
https://github.com/open5gs/open5gs/issues/4261#event-21968563677 issue-tracking
https://github.com/open5gs/open5gs/issues/4261#issue-3787803578 exploitissue-tracking
https://github.com/open5gs/open5gs/ product

Affected products

Open5GS

==2.7.3
==2.7.6
==2.7.1
==2.7.4
==2.7.2
==2.7.5
==2.7.0

Matching in nixpkgs

pkgs.open5gs

4G/5G core network components

nixos-unstable 2.7.6
- nixpkgs-unstable 2.7.6
- nixos-unstable-small 2.7.6
nixos-25.11 2.7.6
- nixpkgs-25.11-darwin 2.7.6

pkgs.open5gs-webui

4G/5G core network components

nixos-unstable -
- nixpkgs-unstable 2.7.6
- nixos-unstable-small 2.7.6
nixos-25.11 2.7.6
- nixpkgs-25.11-darwin 2.7.6

Package maintainers

@Bot-wxt1221 Bot-wxt1221 <3264117476@qq.com>
@xddxdd Yuhui Xu <b980120@hotmail.com>