Vulnerability in Open5gs
CVE-2025-15687
A security flaw has been discovered in Open5GS up to 2.7.6. Impacted is the function smf_gx_cca_cb of the component SMF Diameter Gx Credit-Control-Answer Handler. The manipulation results in denial of service. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks. Upgrading to version 2.7.7 is recommended to address this issue. The patch is identified as f23d7a5e959acd8f37b925dc29b85f26b7d391cb. Upgrading the affected component is advised.
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: 0.006 (48.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.5% 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: 0.006 · change: +0.003
Affected products
- Open5gs — versions 2.7.0, 2.7.1, 2.7.2
Weakness classification (CWE)
References
- vuldb.com/vuln/387283 (technical-description, vdb-entry)
- vuldb.com/vuln/387283/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2025-15687 (third-party-advisory)
- vuldb.com/submit/867119 (third-party-advisory)
- github.com/open5gs/open5gs/issues/4027 (issue-tracking)
- github.com/open5gs/open5gs/pull/4034 (issue-tracking, patch)
- github.com/user-attachments/files/21515527/SMF.crashes.zip (exploit)
- github.com/open5gs/open5gs/commit/f23d7a5e959acd8f37b925dc29b85f26b7d391cb (patch)
- github.com/open5gs/open5gs/releases/tag/v2.7.7 (patch)
- github.com/open5gs/open5gs/ (product)
Frequently asked questions
- What is CVE-2025-15687?
- CVE-2025-15687 is a medium-severity vulnerability in Open5gs, classified under Improper Resource Shutdown or Release. CVSS score: 4.3/10. Published 2026-08-12.
- How severe is CVE-2025-15687?
- Medium severity. CVSS v3 base score is 4.3 out of 10.