# free5GC Nef vulnerabilities

Source: https://junglewise.ai/threats/technologies/nef  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/nef.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 7 vulnerabilities in free5GC Nef: 0 in the last 7 days and 0 in the last 90 days, 4 of them critical and 0 exploited in the wild. The most recent, CVE-2026-44330, was published on 27 May 2026.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 7 (4 critical, 0 exploited in the wild)

## About free5GC Nef

The Network Exposure Function (NEF) is a core component of the free5GC open-source 5G core network project.

## Latest free5GC Nef vulnerabilities

- [CVE-2026-44330: free5GC NEF authentication bypass in nnef-pfdmanagement API](https://junglewise.ai/threats/cve-2026-44330-free5gc-nef-authentication-bypass-in-nnef-pfdmanagement-api) (critical, CVSS 10, published 27 May 2026)
- [CVE-2026-44327: free5GC NEF missing authentication in OAM route group](https://junglewise.ai/threats/cve-2026-44327-free5gc-nef-missing-authentication-in-oam-route-group) (critical, CVSS 10, published 27 May 2026)
- [CVE-2026-44326: free5GC NEF missing authentication in 3gpp-traffic-influence API](https://junglewise.ai/threats/cve-2026-44326-free5gc-nef-missing-authentication-in-3gpp-traffic-influence-api) (critical, CVSS 9.4, published 27 May 2026)
- [CVE-2026-44322: free5GC NEF NULL pointer dereference in PFD management handler](https://junglewise.ai/threats/cve-2026-44322-free5gc-nef-null-pointer-dereference-in-pfd-management-handler) (high, CVSS 7.5, published 27 May 2026)
- [CVE-2026-44320: free5GC NEF missing authentication in nnef-callback route group](https://junglewise.ai/threats/cve-2026-44320-free5gc-nef-missing-authentication-in-nnef-callback-route-group) (high, CVSS 7.3, published 27 May 2026)
- [CVE-2026-44319: free5GC NEF denial of service via unreachable notification URI](https://junglewise.ai/threats/cve-2026-44319-free5gc-nef-denial-of-service-via-unreachable-notification-uri) (high, CVSS 7.5, published 27 May 2026)
- [CVE-2026-44315: free5GC NEF missing authorization in 3gpp-pfd-management API](https://junglewise.ai/threats/cve-2026-44315-free5gc-nef-missing-authorization-in-3gpp-pfd-management-api) (critical, CVSS 9.4, published 27 May 2026)

## Most severe free5GC Nef vulnerabilities

- [CVE-2026-44327: free5GC NEF missing authentication in OAM route group](https://junglewise.ai/threats/cve-2026-44327-free5gc-nef-missing-authentication-in-oam-route-group) (critical, CVSS 10, published 27 May 2026)
- [CVE-2026-44330: free5GC NEF authentication bypass in nnef-pfdmanagement API](https://junglewise.ai/threats/cve-2026-44330-free5gc-nef-authentication-bypass-in-nnef-pfdmanagement-api) (critical, CVSS 10, published 27 May 2026)
- [CVE-2026-44326: free5GC NEF missing authentication in 3gpp-traffic-influence API](https://junglewise.ai/threats/cve-2026-44326-free5gc-nef-missing-authentication-in-3gpp-traffic-influence-api) (critical, CVSS 9.4, published 27 May 2026)
- [CVE-2026-44315: free5GC NEF missing authorization in 3gpp-pfd-management API](https://junglewise.ai/threats/cve-2026-44315-free5gc-nef-missing-authorization-in-3gpp-pfd-management-api) (critical, CVSS 9.4, published 27 May 2026)
- [CVE-2026-44322: free5GC NEF NULL pointer dereference in PFD management handler](https://junglewise.ai/threats/cve-2026-44322-free5gc-nef-null-pointer-dereference-in-pfd-management-handler) (high, CVSS 7.5, published 27 May 2026)
- [CVE-2026-44319: free5GC NEF denial of service via unreachable notification URI](https://junglewise.ai/threats/cve-2026-44319-free5gc-nef-denial-of-service-via-unreachable-notification-uri) (high, CVSS 7.5, published 27 May 2026)
- [CVE-2026-44320: free5GC NEF missing authentication in nnef-callback route group](https://junglewise.ai/threats/cve-2026-44320-free5gc-nef-missing-authentication-in-nnef-callback-route-group) (high, CVSS 7.3, published 27 May 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other free5GC technologies

- [free5GC](https://junglewise.ai/threats/technologies/free5gc): 29 vulnerabilities
- [free5GC Udr](https://junglewise.ai/threats/technologies/udr): 7 vulnerabilities
- [free5GC Pcf](https://junglewise.ai/threats/technologies/pcf): 4 vulnerabilities
- [free5GC NRF](https://junglewise.ai/threats/technologies/nrf): 3 vulnerabilities
- [free5GC SMF](https://junglewise.ai/threats/technologies/smf): 3 vulnerabilities
- [free5GC Udm](https://junglewise.ai/threats/technologies/udm): 3 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "free5GC Nef vulnerabilities", https://junglewise.ai/threats/technologies/nef, 9 November 2026.