Vulnerability in Open5gs
CVE-2026-7707
A vulnerability was found in Open5GS up to 2.7.7. Impacted is the function udr_nudr_dr_handle_subscription_context of the file /src/udr/nudr-handler.c of the component UDR. The manipulation of the argument pei results in denial of service. The attack can be launched remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.005 (43.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.001
Affected products
- Open5gs — versions 2.7.0, 2.7.1, 2.7.2
Weakness classification (CWE)
References
- vuldb.com/vuln/360883 (technical-description, vdb-entry)
- vuldb.com/vuln/360883/cti (signature, permissions-required)
- vuldb.com/submit/805699 (third-party-advisory)
- vuldb.com/submit/805700 (third-party-advisory)
- github.com/open5gs/open5gs/issues/4410 (issue-tracking)
- github.com/open5gs/open5gs/issues/4411 (issue-tracking, exploit)
- github.com/open5gs/open5gs/ (product)
Frequently asked questions
- What is CVE-2026-7707?
- CVE-2026-7707 is a medium-severity vulnerability in Open5gs, classified under Improper Resource Shutdown or Release. CVSS score: 4.3/10. Published 2026-05-03.
- How severe is CVE-2026-7707?
- Medium severity. CVSS v3 base score is 4.3 out of 10.