CVE-2026-42081
- Source
- https://cve.org/CVERecord?id=CVE-2026-42081
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42081.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-42081
- Aliases
- Published
- 2026-05-27T15:59:58.216Z
- Modified
- 2026-07-08T08:05:21.108242336Z
- Severity
-
- 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L CVSS Calculator
- Summary
- free5GC: UE Security Capability bypass on NGAP PathSwitchRequest
- Details
-
free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, the AMF in Free5GC does not verify the UE Security Capabilities received in NGAP PathSwitchRequest messages against its locally stored values, as mandated by 3GPP TS 33.501 ยง6.7.3.1. A malicious gNB can overwrite the AMF's stored UE security capabilities with arbitrary values, which are then propagated in PathSwitchRequest Acknowledge messages and subsequent Handover Request messages. This leads to persistent handover denial-of-service for affected UEs. This vulnerability is fixed in 4.2.2.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42081.json", "cwe_ids": [ "CWE-358" ], "cna_assigner": "GitHub_M" }- References
Affected packages
Git / github.com/free5gc/free5gc
Affected ranges
- Type
- GIT
- Repo
- https://github.com/free5gc/free5gc
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
- Database specific
{ "cpe": "cpe:2.3:a:free5gc:free5gc:*:*:*:*:*:*:*:*", "source": [ "AFFECTED_FIELD", "CPE_RANGE" ], "extracted_events": [ { "introduced": "0" }, { "fixed": "4.2.2" } ] }