High 8.3Published Sep 14, 2026

CVE-2026-90707Open5GS Old AMF Discovery Fallback nnrf-handler.c amf_nnrf_try_old_amf_discovery_fallback use after free

Updated under an hour ago (2026-10-19 07:10 UTC)

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It affects n/a Open5GS. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for n/a Open5GS

Exploited in the last 30 days

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.

CVSS: 8.3 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L/E:X/RL:O/RC:C
Weakness (CWE): CWE-416, CWE-119
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Sep 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

n/a Open5GS open5gs:open5gs	2.0; 2.1; 2.2; 2.3; 2.4; 2.5; 2.6; 2.7	CNA record

References

https://vuldb.com/vuln/403249vdb-entry, technical-description
https://vuldb.com/vuln/403249/ctisignature, permissions-required
https://vuldb.com/cve/CVE-2026-90707third-party-advisory
https://vuldb.com/submit/918267third-party-advisory
https://github.com/open5gs/open5gs/pull/4698issue-tracking, patch
https://github.com/open5gs/open5gs/commit/ddd683a35f8aaac2b7b9884a24cd53bddfc65238patch
https://github.com/open5gs/open5gs/product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.