Medium severity · published Sep 20, 2026
CVE-2026-94043
Free5GC Gmm handler.go race condition
5.3
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 47% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FR
Free5GC · Free5gc
4.2.0; 4.2.1; 4.2.2; 4.2.3 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-94043
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-94043
github.com
https://github.com/free5gc/amf/commit/e323b01464355781b8b8d5dd695e05cbc00a62f2
github.com
https://github.com/free5gc/amf/pull/238
github.com
https://github.com/free5gc/free5gc/
github.com
https://github.com/free5gc/free5gc/issues/1109
vuldb.com
https://vuldb.com/cve/CVE-2026-94043
vuldb.com
https://vuldb.com/submit/949261
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