Description

An issue in Free5GC v.4.2.2 allows a remote attacker to cause a denial of service via the UPF component

Is your site exposed to CVE-2026-75439?

Run a free security scan — no signup, results in seconds.

Scan my site

EPSS — Exploit Prediction

0.0025

Probability of exploitation

0.16%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://gist.github.com/hackeryounow/0f434c03008462e6eec3b43ed3cd12d8 https://github.com/free5gc/free5gc/issues/1059 https://github.com/free5gc/free5gc/issues/1059.https://github.com/free5gc/go-upf/pull/97 https://github.com/free5gc/go-upf/pull/97 https://github.com/hackeryounow/5GCVulDB/tree/main/CVE-2026-75439

Frequently Asked Questions

What is CVE-2026-75439? +

An issue in Free5GC v.4.2.2 allows a remote attacker to cause a denial of service via the UPF component

How do I check if I'm vulnerable to CVE-2026-75439? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.