Vulnerability in Free5gc
CVE-2026-94043
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.
Vulnerability class: Race Condition
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.006 (47.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Free5gc — versions 4.2.0, 4.2.1, 4.2.2
Weakness classification (CWE)
References
- vuldb.com/vuln/407972 (vdb-entry)
- vuldb.com/vuln/407972/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-94043 (third-party-advisory)
- vuldb.com/submit/949261 (third-party-advisory)
- github.com/free5gc/free5gc/issues/1109 (issue-tracking)
- github.com/free5gc/amf/pull/238 (issue-tracking, patch)
- github.com/free5gc/amf/commit/e323b01464355781b8b8d5dd695e05cbc00a62f2 (patch)
- github.com/free5gc/free5gc/ (product)
Frequently asked questions
- What is CVE-2026-94043?
- CVE-2026-94043 is a medium-severity vulnerability in Free5gc, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 5.3/10. Published 2026-09-20.
- How severe is CVE-2026-94043?
- Medium severity. CVSS v3 base score is 5.3 out of 10.