EUVD-2026-73430
GHSA-2mg5-36wf-rpr6
Severity by source
AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Network-reachable UAF with PR:L (authenticated low-priv attacker), AC:H for heap exploitation complexity, UI:R per description; full C/I/A for successful privilege escalation to SYSTEM.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges over a network.
AnalysisAI
Use-after-free in the Windows Search Component enables an authenticated low-privileged network attacker to elevate privileges, potentially achieving full system compromise (C:H/I:H/A:H). The vulnerability spans virtually the entire modern Windows ecosystem - from Windows Server 2012 through Windows 11 26H1 and Windows Server 2025 - making the unpatched population extremely large. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must possess a valid low-privileged account with network access to the target system (PR:L, AV:N). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 7.1 (AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H) captures meaningful risk moderated by significant exploitation barriers. … 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 Microsoft's security update for the appropriate Windows version immediately. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory Windows systems across your infrastructure running Windows Server 2012-2025 and Windows 11 to determine patch scope and prioritization. …
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Threat intelligence, references, and detailed analysis are available after sign-in.
Same weakness CWE-416 – Use After Free
View allSame technique Privilege Escalation
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External POC / Exploit Code
Leaving vuln.today