EUVD-2026-73035
GHSA-wxvg-7fx2-54wh
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local attack requiring authenticated low-privilege user; AC:L as no special conditions beyond local access; full CIA reflects SYSTEM-level escalation granting complete host control.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Heap-based buffer overflow in Windows Credential Providers allows an authorized attacker to elevate privileges locally.
AnalysisAI
Heap-based buffer overflow in Windows Credential Providers enables a locally authenticated, low-privileged user to escalate to SYSTEM-level privileges across a broad range of Windows 10, 11, and Windows Server releases. The CWE-122 flaw resides in the credential provider subsystem, requiring no user interaction and no elevated starting privileges, making it a reliable post-compromise escalation primitive for multi-stage attacks. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a locally authenticated account with at least standard user (low) privileges on the target Windows system, consistent with the CVSS PR:L metric. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 score is well-calibrated: the AV:L/PR:L metrics correctly limit the risk to scenarios where an attacker already has local, authenticated access - insider threats, endpoint malware with user-level execution, or post-initial-access lateral movement. … 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 Microsoft security updates corresponding to each affected Windows branch: update Windows 10 21H2 to build 10.0.19044.7725, Windows 10 22H2 to 10.0.19045.7725, Windows 10 1809 and Server 2019 to 10.0.17763.9245, Windows 11 23H2 to 10.0.22631.7582, Windows 11 24H2 and Server 2025 to 10.0.26100.9445 or 10.0.26100.33438 respectively, Windows 11 25H2 to 10.0.26200.9445, Windows 11 26H1 to 10.0.28000.2954, and Server 2022 to 10.0.20348.5622. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, audit your environment to identify all Windows 10, 11, and Windows Server systems and confirm patch availability from Microsoft for your specific editions. …
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Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
Leaving vuln.today