EUVD-2026-75921
GHSA-937c-856w-w843
Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Network-reachable IKE service, no credentials required (pre-auth), but AC:H due to protocol state-machine complexity and unconfirmed exploitability; scope change assumed if tunnel protection is undermined.
Primary rating from Vendor (vendor:ubuntu).
CVSS VectorVendor: vendor:ubuntu
Lifecycle Timeline
4DescriptionCVE.org
Creation of a Child SA Pre-Authentication
AnalysisAI
Pre-authentication Child SA creation in an IKEv2/IPsec implementation reported via Ubuntu allows a network attacker to establish a Child Security Association before the IKE authentication phase completes. In the IKEv2 protocol (RFC 7296), Child SAs should only be negotiated after mutual authentication of the IKE SA; bypassing this ordering can undermine the confidentiality and integrity guarantees of the protected traffic tunnels. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exact exploitation conditions are not determinable from the sparse description. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Real-world risk cannot be fully assessed due to severely incomplete input: CVSS vector, EPSS score, KEV status, POC availability, and affected version ranges are all absent. … 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 patch version, advisory URL, or vendor fix information was provided in the input data. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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