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CVE-2026-2062: Open5GS can crash from remote PGW request

CVE-2026-2062 · published 9 months ago

Summary

The Open5GS software (versions up to 2.7.6) has a flaw in the part that handles certain network messages. An attacker on the internet could send specially crafted data that causes the program to stop working. Install the provided software update to fix the problem.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software

Vendor	Product	Affected versions
open5gs	open5gs	<= 2.7.0 `cpe:2.3:a:open5gs:open5gs::::::::`

Original advisory text

Open5GS PGW S5U Address sgwc_sxa_handle_session_modification_response null pointer dereference

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.

References

https://github.com/open5gs/open5gs/ URL
https://vuldb.com/?id.344622 Vendor Advisory
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/2xxx/CVE-2026-2062.j... Vendor Advisory
https://nvd.nist.gov/vuln/detail/CVE-2026-2062 Vendor Advisory
https://vuldb.com/?submit.744719 Vendor Advisory
https://github.com/open5gs/open5gs/issues/4257 Third Party Advisory
https://github.com/open5gs/open5gs/issues/4257#issue-3787701521 Third Party Advisory
https://vuldb.com/?ctiid.344622 Third Party Advisory
https://github.com/open5gs/open5gs/commit/f1bbd7b57f831e2a070780a7d8d5d4c73babdb... Patch

Fix within

Internet-facing 14 days

Internal 60 days

Not known to be exploited
Can be exploited automatically
Gives an attacker partial control

Severity

7.8 High

Exploitation

<1% chance of attack within 30 days

Type

CWE-404Improper Resource Shutdown or Release

CWE-476NULL Pointer Dereference

Timeline

Published6 Feb 2026

Updated4 Nov 2026

First seen6 Mar 2026

Sources

CVE-2026-2062 · NVD

CVE-2026-2062 · OSV

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