EUVD-2026-73065
GHSA-xp53-45g8-gmvv
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local access with standard-user credentials required (AV:L/PR:L); reliable exploitation (AC:L); full C/I/A impact from SYSTEM-level escalation with no scope change.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Numeric truncation error in Windows Kerberos allows an authorized attacker to elevate privileges locally.
AnalysisAI
Heap-based buffer overflow in the Windows Kerberos authentication subsystem, triggered by a numeric truncation error, enables a locally authenticated attacker with standard user privileges to escalate to SYSTEM-level access on all major supported Windows releases. The CVSS vector (AV:L/AC:L/PR:L/UI:N) indicates low attack complexity and no user interaction required once local code execution is achieved, yielding full confidentiality, integrity, and availability impact. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a locally authenticated session with at least standard (non-administrative) user privileges, consistent with the CVSS PR:L metric. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) is well-calibrated: local access with a standard user account is the only prerequisite, attack complexity is low, and no user interaction is needed. … 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 | Apply the vendor-released patches via Windows Update, WSUS, or Microsoft Update Catalog, targeting the specific fixed build numbers for each Windows version as listed in the affected versions data. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows systems in your environment including servers, workstations, and domain controllers to identify patch scope. …
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Threat intelligence, references, and detailed analysis are available after sign-in.
Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
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