CVE-2026-30070 free5gc CVE debrief

Who should care

Users of free5gc v4.0.1 should review and apply vendor patches to prevent potential Denial of Service attacks. This includes operators, administrators, and security teams managing free5gc deployments. They should assess their exposure, verify vendor guidance, and apply patches or mitigations as needed. Additionally, they should monitor for potential Denial of Service attacks and review compensating controls for exposed systems. Security teams should prioritize patching and verify affected scope to minimize potential impact. IT operations teams should also be aware of the vulnerability and plan for vendor-supported updates through normal change control processes. Furthermore, they should check relevant monitoring, detection, and logs for exposed assets that need extra review. Lastly, they should confirm whether affected product deployments exist in managed environments and assign an owner for follow-up. This will ensure a comprehensive approach to addressing the vulnerability and minimizing risk. Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance. Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed. Review compensating controls for exposed systems while remediation is scheduled and verified. Check relevant monitoring, detection, and logs for exposed assets that need extra review. Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up. This approach ensures that all necessary stakeholders are informed and taking appropriate actions to mitigate the vulnerability. By taking these steps, organizations can effectively manage the risk associated with CVE-2026-30070 and protect their systems from potential Denial of Service attacks. In addition to these measures, it is essential to maintain awareness of the vulnerability and stay informed about any updates or developments related to the CVE. This includes monitoring for any new information that may become available and being prepared to adapt and respond as needed. By staying vigilant and proactive, organizations can minimize the risk of exploitation and keep

Technical summary

An issue in the HandleGetSharedData function of free5gc v4.0.1 allows attackers to cause a Denial of Service (DoS) via a crafted input. The vulnerability is caused by improper handling of shared data, which can lead to a crash or unexpected behavior. The affected product, free5gc v4.0.1, is a 5G core network implementation that provides a range of network functions, including authentication, authorization, and data processing. The vulnerability can be exploited by sending a crafted input to the HandleGetSharedData function, which can cause a Denial of Service (DoS) attack. The vulnerability has a CVSS score of 7.5 and a CVSS severity of HIGH.

Defensive priority

Review and apply vendor patches for free5gc v4.0.1 to prevent potential Denial of Service attacks.

Recommended defensive actions

• Review and apply vendor patches for free5gc v4.0.1
• Monitor for potential Denial of Service attacks
• Verify affected scope and vendor remediation status

Evidence notes

Evidence is limited; verify affected scope and vendor remediation status. Monitor for potential Denial of Service attacks. The CVE record was published on 2026-08-27T17:17:52.090Z and has not been modified since then. Users should verify the affected scope and vendor remediation status. Limited evidence is available; defenders should focus on verifying affected systems and applying patches.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.