EUVD-2026-73454
GHSA-352w-jjjr-j8mh
Severity by source
AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Network-reachable via Search service, low complexity, requires authenticated low-privileged attacker and user interaction; full CIA impact from SYSTEM-level privilege escalation, no scope change.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Double free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges over a network.
AnalysisAI
Privilege escalation in the Microsoft Windows Search Component exposes Windows 11 and Windows Server 2022/2025 systems to full system compromise via a double-free memory corruption flaw. An authenticated, low-privileged attacker can trigger the vulnerability over the network with user interaction to gain SYSTEM-level privileges, achieving complete confidentiality, integrity, and availability impact. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must already possess a valid low-privileged account or session on the network (PR:L per CVSS), as the description specifies an 'authorized attacker.' User interaction (UI:R) is required, meaning a local or remote user on the target system must perform some action - such as opening a file, navigating a share, or triggering a Search query - to activate the vulnerable code path. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.0 base score reflects a high-severity, network-accessible privilege escalation with low privilege required and user interaction as a prerequisite - meaning exploitation is constrained but not impractical. … 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 distributed via Windows Update or WSUS for each affected build: Windows Server 2025 and Windows 11 Version 24H2 to build 10.0.26100.33438 or later; Windows Server 2022 to 10.0.20348.5622 or later; Windows 11 23H2 to 10.0.22631.7582 or later; Windows 11 25H2 to 10.0.26200.9445 or later; Windows 11 26H1 to 10.0.28000.2954 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all Windows 11, Windows Server 2022, and 2025 systems in your environment. …
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Same weakness CWE-415 – Double Free
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External POC / Exploit Code
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