Is CVE-2026-90707 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-90707?

CVE-2026-90707 has a CVSS v3 severity of HIGH (8.3).

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CVE-2026-90707

Description

A security flaw has been discovered in Open5GS up to 2.7.x. Affected is the function amf_nnrf_try_old_amf_discovery_fallback of the file src/amf/nnrf-handler.c of the component Old AMF Discovery Fallback. The manipulation of the argument discovery_option results in use after free. The attack may be performed from remote. The patch is identified as ddd683a35f8aaac2b7b9884a24cd53bddfc65238. Applying a patch is advised to resolve this issue.