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PatchSiren cyber security CVE debrief

CVE-2026-30046 Open5GS CVE debrief

A reachable assertion vulnerability in the NUDM-UECM interface of Open5GS v2.7.6 allows attackers to cause a Denial of Service (DoS) via supplying a crafted DELETE request. This vulnerability has significant implications for administrators and users of Open5GS v2.7.6 installations, as it can lead to service disruptions. The vulnerability is classified as HIGH severity with a CVSS score of 7.5. Further investigation and verification are necessary to fully understand the vulnerability's impact and affected scope. The Open5GS v2.7.6 installations are potentially affected, and defenders should verify the presence of this version in their environments.

Vendor
Open5GS
Product
Open5GS
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-27
Original CVE updated
2026-08-31
Advisory published
2026-08-27
Advisory updated
2026-08-31

Who should care

Administrators and users of Open5GS v2.7.6 installations, as well as security teams and vulnerability management teams, should be aware of this vulnerability and take necessary precautions to mitigate the risk. They should review the official advisory and CVE record to validate affected scope, severity, and vendor guidance. Furthermore, they should plan vendor-supported updates or mitigations through normal change control where exposure is confirmed and review compensating controls for exposed systems while remediation is scheduled and verified.

Technical summary

A reachable assertion vulnerability in the NUDM-UECM interface of Open5GS v2.7.6 allows attackers to cause a Denial of Service (DoS) via supplying a crafted DELETE request. The vulnerability has a CVSS score of 7.5 and is classified as HIGH severity.

Defensive priority

High-priority defensive actions are required to address this vulnerability.

Recommended defensive actions

  • Verify the affected scope and inventory of Open5GS v2.7.6 installations.
  • Implement compensating controls to detect and prevent potential attacks.
  • Monitor for any suspicious activity related to the NUDM-UECM interface.
  • Apply vendor remediation or patches when available.

Evidence notes

The CVE record and NVD entry provide limited information about the vulnerability. Further investigation and verification are necessary to fully understand the vulnerability's impact and affected scope. The Open5GS v2.7.6 installations are potentially affected, and defenders should verify the presence of this version in their environments. Additionally, they should review the official advisory and CVE record to validate affected scope, severity, and vendor guidance.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-30046 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-30046

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-30046 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-30046

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental 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.