EUVD-2026-73476
GHSA-jcv7-vpvx-x7qg
Severity by source
AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
PR:L confirmed by 'authorized attacker' description; UI:R retained for LSA victim-operation dependency; C/I/A:H consistent with privilege escalation in core auth component.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Out-of-bounds read in Microsoft Local Security Authority Server (lsasrv) allows an authorized attacker to elevate privileges over a network.
AnalysisAI
Privilege escalation via out-of-bounds read in the Windows Local Security Authority Server (lsasrv) allows a low-privileged authenticated attacker to elevate to higher system access over a network. Affected across a wide range of Windows 10, Windows 11, Windows Server 2022, and Windows Server 2025 builds, this vulnerability targets the core Windows authentication subsystem. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a low-privileged authenticated account (PR:L, consistent with Microsoft's 'authorized attacker' phrasing) with network access to the target Windows system's LSA RPC interface. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.0 vector (AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H) reflects a meaningful but bounded risk profile. … 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 through Windows Update or WSUS, targeting the fixed build numbers listed per affected OS version above (e.g., Windows 10 22H2 to build 10.0.19045.7725 or later, Windows Server 2025 to 10.0.26100.33438 or later). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Begin immediately by inventorying all Windows 10, 11, Server 2022, and Server 2025 systems, prioritizing domain controllers and authentication servers. …
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Same weakness CWE-125 – Out-of-bounds Read
View allSame technique Information Disclosure
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External POC / Exploit Code
Leaving vuln.today