{"id":"CVE-2026-44319","revision":"c99e66690eef43c59ab83fc1cf3ba54d","records":[{"revision":"c99e66690eef43c59ab83fc1cf3ba54d","observedAt":"2026-10-25T10:17:21.823+00:00","statement":{"source":"nvd","id":"CVE-2026-44319","aliases":[],"title":"free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF terminates the entire process when a stored PFD-subscription notifyUri cannot be reached. In PfdChangeNotifier.FlushNotifications(), the notifier…","description":"free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF terminates the entire process when a stored PFD-subscription notifyUri cannot be reached. In PfdChangeNotifier.FlushNotifications(), the notifier calls NnefPFDmanagementNotify(...) and on any delivery error invokes logger.PFDManageLog.Fatal(err), which is os.Exit(1)-equivalent in Go. An attacker who can create a PFD subscription with an attacker-chosen notifyUri and then trigger a PFD change can deterministically kill NEF on the asynchronous delivery attempt -- the process exits with status 1, dropping NEF's entire SBI surface until restart. This vulnerability is fixed in 4.2.2.","state":0,"publishedAt":"2026-05-27T17:16:37.033+00:00","modifiedAt":"2026-10-14T20:10:00.19+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://github.com/free5gc/free5gc/issues/924","https://github.com/free5gc/free5gc/security/advisories/GHSA-rxrq-fv76-26pr","https://github.com/free5gc/nef/commit/f110517b1189801950b50668a593398687049074","https://github.com/free5gc/nef/pull/25"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-44319","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-20","CWE-617","CWE-755"],"productCriteria":["cpe:2.3:a:free5gc:free5gc:*:*:*:*:*:*:*:*"],"sourceDates":{"published":"2026-05-27T17:16:37.033","lastModified":"2026-10-14T20:10:00.190"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-44319","identifiers":["CVE-2026-44319"]},"retained":false,"historicalAffected":[]}],"coverage":[]}