CVE-2026-1738: Open5GS SGWC context.c sgwc_tunnel_add assertion

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-02-02 · updated 2026-06-17
Weakness: CWE-617

Description

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.

Affected products

Open5GS: through 2.7.6

References

https://github.com/open5gs/open5gs/
https://github.com/open5gs/open5gs/issues/4261
https://github.com/open5gs/open5gs/issues/4261#event-21968563677
https://github.com/open5gs/open5gs/issues/4261#issue-3787803578
https://vuldb.com/?ctiid.343637
https://vuldb.com/?id.343637
https://vuldb.com/?submit.741193

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