CVE-2025-69247
7.5 · HIGHOverview
CVE-2025-69247 is a high-severity vulnerability affecting free5gc go-upf. It was published on February 23, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
free5GC go-upf is the User Plane Function (UPF) implementation for 5G networks that is part of the free5GC project. Versions prior to 1.2.8 have a Heap-based Buffer Overflow (CWE-122) vulnerability leading to Denial of Service. Remote attackers can crash the UPF network element by sending a specially crafted PFCP Session Modification Request with an invalid SDF Filter length field. This causes a heap buffer overflow, resulting in complete service disruption for all connected UEs and potential cascading failures affecting the SMF. All deployments of free5GC using the UPF component may be affected. Version 1.2.8 of go-upf contains a fix.
Remediation
Check the references section for vendor advisories and patches from free5gc. Update go-upf to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| free5gc | go-upf | >= 0, < 1.2.8 | Affected |
Frequently Asked Questions
What is CVE-2025-69247?
CVE-2025-69247 is a high-severity vulnerability affecting free5gc go-upf. It was published on February 23, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2025-69247?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2025-69247?
Check the references section for vendor advisories and patches from free5gc. Update go-upf to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2025-69247?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-69247 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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