Vulnerability in Open5gs
CVE-2025-15684
A vulnerability was detected in Open5GS up to 2.7.6. Affected is the function diam_log_func of the file lib/diameter/common/init.c of the component CER Handler. The manipulation results in reachable assertion. The attack can be executed remotely. The exploit is now public and may be used. Upgrading to version 2.7.7 is able to address this issue. The patch is identified as c1a803516a3c0485696cb9bcca7a80ad857c7383. It is advisable to upgrade the affected component.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.007 (52.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 52.8% 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: 0.007 · change: +0.003
Affected products
- Open5gs — versions 2.7.0, 2.7.1, 2.7.2
Weakness classification (CWE)
References
- vuldb.com/vuln/387277 (technical-description, vdb-entry)
- vuldb.com/vuln/387277/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2025-15684 (third-party-advisory)
- vuldb.com/submit/867102 (third-party-advisory)
- github.com/open5gs/open5gs/issues/4155 (issue-tracking, exploit)
- github.com/open5gs/open5gs/commit/c1a803516a3c0485696cb9bcca7a80ad857c7383 (patch)
- github.com/open5gs/open5gs/releases/tag/v2.7.7 (patch)
- github.com/open5gs/open5gs/ (product)
Frequently asked questions
- What is CVE-2025-15684?
- CVE-2025-15684 is a medium-severity vulnerability in Open5gs, classified under Reachable Assertion. CVSS score: 5.3/10. Published 2026-08-12.
- How severe is CVE-2025-15684?
- Medium severity. CVSS v3 base score is 5.3 out of 10.