CVE-2026-90707

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

HIGH
8.3
CVSS Score
Published: September 14, 2026 at 10:45 AM UTC
Updated: September 15, 2026 at 02:17 PM UTC
1 product affected across 1 vendorOpen5GS

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Severity
HIGH8.3
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (7)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/403249
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/403249/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/cve/CVE-2026-90707
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/918267
Issue TrackingPatch
Source: cverecord
https://github.com/open5gs/open5gs/pull/4698
Product
Source: cverecord
https://github.com/open5gs/open5gs/

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.3HIGHVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-416CWE-119

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