CVE-2026-44319
7.5 HIGHfree5GC is an open-source implementation of the 5G core network
Published: 2026-05-27 · Last updated: 2026-05-28
Severity and scoring
- CVSS
- 7.5 HIGH
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CWE
- CWE-20, CWE-617, CWE-755
Affected products
| Vendor | Product |
|---|---|
| free5gc | free5gc |
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.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-44319
- [Exploit reference]https://github.com/free5gc/free5gc/issues/924
- [Vendor advisory]https://github.com/free5gc/free5gc/security/advisories/GHSA-rxrq-fv76-26pr
- [Patch]https://github.com/free5gc/nef/commit/f110517b1189801950b50668a593398687049074
- [Patch]https://github.com/free5gc/nef/pull/25
- [Exploit reference]https://github.com/free5gc/free5gc/issues/924
- [Vendor advisory]https://github.com/free5gc/free5gc/security/advisories/GHSA-rxrq-fv76-26pr
Related CVEs
Same vendor
- CVE-2026-44330 — free5GC is an open-source implementation of the 5G core network (10.0 CRITICAL)
- CVE-2026-44329 — free5GC is an open-source implementation of the 5G core network (10.0 CRITICAL)
- CVE-2026-44328 — free5GC is an open-source implementation of the 5G core network (8.2 HIGH)
- CVE-2026-44327 — free5GC is an open-source implementation of the 5G core network (10.0 CRITICAL)
- CVE-2026-44326 — free5GC is an open-source implementation of the 5G core network (9.4 CRITICAL)
Same CWE
- CVE-2026-52718 — A denial of service vulnerability was found in GStreamer's AV1 codec parser in gst-plugins-bad (6.5 MEDIUM)
- CVE-2026-12191 — A vulnerability was found in Comma AI Openpilot 0.11 (7.8 HIGH)
- CVE-2026-45013 — ApostropheCMS is an open-source Node.js content management system (8.1 HIGH)
- CVE-2026-54133 — jmespath.php allows users to use JMESPath, software for declaratively specifying how to extract elements from a JSON document, in PHP app... (9.8 CRITICAL)
- CVE-2026-47196 — Quest Bot is an opensource Discord Bot