EUVD-2026-67243
GHSA-3q9g-cv44-9m67
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GTP is a network protocol requiring no authentication; crafted packet triggers crash with no interaction, impacting only availability.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
4DescriptionCVE.org
An integer overflow in the SMF component of Open5GS v2.7.6 allows attackers to cause a Denial of Service (DoS) via supplying a crafted GTP packet.
AnalysisAI
Integer overflow in Open5GS v2.7.6's Session Management Function (SMF) allows remote unauthenticated attackers to crash the service via a crafted GTP packet, causing Denial of Service against 5G core network infrastructure. The CVSS vector (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) confirms zero-authentication network exploitation requiring no user interaction. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The Open5GS SMF component must be running version 2.7.6 and its GTP interface must be network-reachable from the attacker. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.5 High score accurately reflects the zero-authentication, low-complexity network attack path with complete availability impact. … 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 has been identified at time of analysis; the vulnerability is documented via GitHub issues without a linked fix commit or tagged release. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all systems running Open5GS v2.7.6 and document network architecture, then implement strict network segmentation restricting SMF access to authorized 5G control plane nodes only. …
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Same weakness CWE-190 – Integer Overflow or Wraparound
View allSame technique Denial Of Service
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External POC / Exploit Code
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