EUVD-2026-67104
GHSA-vf6f-gr96-c6fr
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Network-reachable SBI API requires no authentication per design; AC:L despite SSVC non-automatable, as the HTTP DELETE vector is well-specified; pure availability impact only.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
4DescriptionCVE.org
A reachable assertion vulnerability in the /nsmf-pdusession/v1/sm-contexts component of Open5GS v2.7.6 allows attackers to cause a Denial of Service (DoS) via supplying a crafted DELETE request.
AnalysisAI
Reachable assertion in Open5GS v2.7.6 SMF crashes the Session Management Function via a crafted DELETE request to the /nsmf-pdusession/v1/sm-contexts endpoint, enabling unauthenticated remote denial of service against the 5G core. Per CVSS PR:N, no authentication is required, though network access to the internal Service Based Interface (SBI) is a practical prerequisite in standard deployments. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The target must be running Open5GS v2.7.6 with the SMF component active and the /nsmf-pdusession/v1/sm-contexts DELETE handler reachable. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.5 High score is driven by AV:N/AC:L/PR:N - a fully network-accessible, unauthenticated DoS - which presents the worst-case surface. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch version has been identified in the available data; the only reference is a GitHub issue (https://github.com/open5gs/open5gs/issues/4201) which should be monitored for a fix commit and tagged release. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Conduct an inventory to confirm Open5GS v2.7.6 deployment; if present, immediately implement network access controls to restrict the /nsmf-pdusession endpoint to authorized internal services only, and enable detailed request logging. …
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Same weakness CWE-617 – Reachable Assertion
View allSame technique Denial Of Service
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External POC / Exploit Code
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