Vulnerability · Published Jun 2, 2026 · Assigned by VulDB
CVE-2026-10565Open5GS NGAP Handover gmm-sm.c gmm_state_security_mode race condition
Low 3.1
In plain English
A low-severity race condition in Open5GS. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities).
Official description
A security flaw has been discovered in Open5GS up to 2.7.6. The impacted element is the function gmm_state_security_mode of the file src/amf/gmm-sm.c of the component NGAP Handover. Performing a manipulation results in race condition. The attack can be initiated remotely. The complexity of an attack is rather high. The exploitability is regarded as difficult. The exploit has been released to the public and may be used for attacks. The pull request to fix this issue awaits acceptance.
Affected products (as reported)
Weakness: CWE-362 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:C
References
- VDB-367672 | Open5GS NGAP Handover gmm-sm.c gmm_state_security_mode race condition vdb-entry, technical-description
- VDB-367672 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- CVE-2026-10565 | CVE Analysis and Report third-party-advisory
- Submit #818938 | open5gs v2.7.6 Race Condition third-party-advisory
- https://github.com/open5gs/open5gs/issues/4497 issue-tracking
- https://github.com/open5gs/open5gs/pull/4501 issue-tracking, patch
- https://github.com/user-attachments/files/27111025/N2-SMC-Concurrent.zip exploit
- https://github.com/open5gs/open5gs/ product