CVE-2025-15539
5.3 · MEDIUMOverview
CVE-2025-15539 is a medium-severity vulnerability affecting open5gs open5gs. It was published on January 19, 2026 and has a CVSS 3.1 base score of 5.3 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
A vulnerability was determined in Open5GS up to 2.7.6. Impacted is the function sgwc_s11_handle_downlink_data_notification_ack of the file src/sgwc/s11-handler.c of the component sgwc. This manipulation causes denial of service. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. Patch name: b4707272c1caf6a7d4dca905694ea55557a0545f. To fix this issue, it is recommended to deploy a patch. The issue report is flagged as already-fixed.
Remediation
Check the references section for vendor advisories and patches from open5gs. Update open5gs 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 |
|---|---|---|---|
| open5gs | open5gs | 0 | Affected |
References
Frequently Asked Questions
What is CVE-2025-15539?
CVE-2025-15539 is a medium-severity vulnerability affecting open5gs open5gs. It was published on January 19, 2026 and has a CVSS 3.1 base score of 5.3 (MEDIUM).
How severe is CVE-2025-15539?
This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2025-15539?
Check the references section for vendor advisories and patches from open5gs. Update open5gs 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-2025-15539?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-15539 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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