Vulnerability · Published Feb 6, 2026 · Assigned by VulDB
CVE-2026-2062Open5GS PGW S5U Address sgwc_sxa_handle_session_modification_response null pointer dereference
Medium 5.3
In plain English
A medium-severity null pointer dereference in Open5GS. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities).
Official description
A vulnerability was identified in Open5GS up to 2.7.6. This affects the function sgwc_s5c_handle_modify_bearer_response/sgwc_sxa_handle_session_modification_response of the component PGW S5U Address Handler. The manipulation leads to null pointer dereference. The attack can be initiated remotely. The exploit is publicly available and might be used. The identifier of the patch is f1bbd7b57f831e2a070780a7d8d5d4c73babdb59. Applying a patch is the recommended action to fix this issue.
Affected products (as reported)
Weakness: CWE-476, CWE-404 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
References
- VDB-344622 | Open5GS PGW S5U Address sgwc_sxa_handle_session_modification_response null pointer dereference vdb-entry, technical-description
- VDB-344622 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- Submit #744719 | Open5GS SGWC v2.7.6 Denial of Service third-party-advisory
- https://github.com/open5gs/open5gs/issues/4257 issue-tracking
- https://github.com/open5gs/open5gs/issues/4257#issue-3787701521 exploit, issue-tracking
- https://github.com/open5gs/open5gs/commit/f1bbd7b57f831e2a070780a7d8d5d4c73babdb59 patch
- https://github.com/open5gs/open5gs/ product