Vulnerability · Published Sep 20, 2026 · Assigned by VulDB
CVE-2026-94043Free5GC Gmm handler.go race condition
Medium 5.3
In plain English
A medium-severity race condition in Free5GC. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities).
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.6%top 52.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
A vulnerability was determined in Free5GC up to 4.2.3. This vulnerability affects unknown code of the file /corefuzzer_deps/free5gc/NFs/amf/internal/gmm/handler.go of the component Gmm Handler. This manipulation causes race condition. The attack can be initiated remotely. Patch name: e323b01464355781b8b8d5dd695e05cbc00a62f2. To fix this issue, it is recommended to deploy a patch.
Affected products (as reported)
Weakness: CWE-362 · 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-407972 | Free5GC Gmm handler.go race condition vdb-entry
- VDB-407972 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- CVE-2026-94043 | CVE Analysis and Report third-party-advisory
- Submit #949261 | N/A Free5GC <=4.2.3 Race Condition third-party-advisory
- https://github.com/free5gc/free5gc/issues/1109 issue-tracking
- https://github.com/free5gc/amf/pull/238 issue-tracking, patch
- https://github.com/free5gc/amf/commit/e323b01464355781b8b8d5dd695e05cbc00a62f2 patch
- https://github.com/free5gc/free5gc/ product