Improper input validation in Free5gc
CVE-2025-65561
An issue was discovered in function LocalNode.Sess in free5GC 4.1.0 allowing attackers to cause a denial of service or other unspecified impacts via crafted header Local SEID to the PFCP Session Modification Request.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (35.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 35.8% 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: 0.004 · change: +0.000
Affected products
- Free5gc — versions 4.1.0
Weakness classification (CWE)
References
- github.com/free5gc/free5gc/issues/730 (Exploit, Third Party Advisory, Issue Tracking)
- github.com/free5gc/go-upf/pull/80 (Issue Tracking)
Frequently asked questions
- What is CVE-2025-65561?
- CVE-2025-65561 is a high-severity vulnerability in Free5gc, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2025-12-18.
- How severe is CVE-2025-65561?
- High severity. CVSS v3 base score is 7.5 out of 10.