Vulnerability · Published Sep 4, 2026 · Assigned by mitre
CVE-2026-75439
High 7.5
In plain English
A high-severity null pointer dereference in the affected software. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 55% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.8%top 44.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
An issue in Free5GC v.4.2.2 allows a remote attacker to cause a denial of service via the UPF component
Affected products (as reported)
Weakness: CWE-476 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/free5gc/free5gc/issues/1059
- https://github.com/free5gc/go-upf/pull/97
- https://gist.github.com/hackeryounow/0f434c03008462e6eec3b43ed3cd12d8
- https://github.com/hackeryounow/5GCVulDB/tree/main/CVE-2026-75439
- https://github.com/free5gc/free5gc/issues/1059.https://github.com/free5gc/go-upf/pull/97