EUVD-2026-73605
GHSA-fqfj-g84h-8jch
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local-only exploit requiring a standard user account (PR:L); heap overflow in SYSTEM-privileged spooler yields full host compromise (C:H/I:H/A:H); no scope change as compromise stays within the host boundary.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Heap-based buffer overflow in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.
AnalysisAI
Heap-based buffer overflow in the Windows Print Spooler service allows a locally authenticated low-privileged attacker to escalate privileges to SYSTEM on a wide range of Windows 10, Windows 11, and Windows Server versions. The vulnerability (CWE-122) is exploitable locally with standard user credentials and no user interaction, yielding full confidentiality, integrity, and availability compromise of the host. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid local or domain user account with interactive or remote desktop session access to the target Windows system (PR:L). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 score (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) accurately reflects a local privilege escalation with a low barrier: any standard domain or local user account is sufficient to trigger exploitation. … 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-released cumulative updates that advance affected builds to the fixed versions: Windows 10 21H2 to build 10.0.19044.7725 or later, Windows 10 22H2 to 10.0.19045.7725 or later, Windows 11 23H2 to 10.0.22631.7582 or later, Windows 11 24H2 to 10.0.26100.9445 or later, Windows 11 25H2 to 10.0.26200.9445 or later, Windows 11 26H1 to 10.0.28000.2954 or later, Windows Server 2022 to 10.0.20348.5622 or later, and Windows Server 2025 (including Server Core) to 10.0.26100.33438 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows 10, 11, and Windows Server systems to identify those with Print Spooler enabled and assess local access risk. …
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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
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