{"cve":"CVE-2026-4531","nvd":{"published":"2026-03-22T02:15:59.270","modified":"2026-06-17T10:56:45.540","status":"Deferred","description":"A weakness has been identified in Free5GC 4.1.0. Affected is the function HandleRegistrationComplete of the file internal/gmm/handler.go of the component AMF. Executing a manipulation can lead to denial of service. The attack may be performed from remote. This patch is called 52e9386401ce56ea773c5aa587d4cdf7d53da799. It is best practice to apply a patch to resolve this issue.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","score":6.9},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3},"cwes":["CWE-404"],"references":["https://github.com/free5gc/amf/commit/52e9386401ce56ea773c5aa587d4cdf7d53da799","https://github.com/free5gc/amf/pull/198","https://github.com/free5gc/free5gc/","https://github.com/free5gc/free5gc/issues/792","https://vuldb.com/?ctiid.352319"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:26:19.218427112+00:00"},"epss":{"cve":"CVE-2026-4531","score":0.00435,"percentile":0.37784,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-xq44-64rg-8g3h","url":"https://osv.dev/vulnerability/GHSA-xq44-64rg-8g3h","summary":"Free5GC AMF is vulnerable to DoS through its HandleRegistrationComplete function","modified":"2026-06-25T23:11:10.578218840Z","packages":[{"ecosystem":"Go","name":"github.com/free5gc/amf","purl":"pkg:golang/github.com/free5gc/amf","ranges":["<1.4.3-0.20260306074636-52e9386401ce"],"fixed":["1.4.3-0.20260306074636-52e9386401ce"]}]},{"id":"GO-2026-5767","url":"https://osv.dev/vulnerability/GO-2026-5767","summary":"Free5GC AMF is vulnerable to DoS through its HandleRegistrationComplete function in github.com/free5gc/amf","modified":"2026-06-25T23:01:44.059367912Z","packages":[{"ecosystem":"Go","name":"github.com/free5gc/amf","purl":"pkg:golang/github.com/free5gc/amf","ranges":["<1.4.3-0.20260306074636-52e9386401ce"],"fixed":["1.4.3-0.20260306074636-52e9386401ce"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}