CVE DATABASE / CVE-2017-8543

CVE-2017-8543

Microsoft Windows Search Remote Code Execution Vulnerability

CVSS 9.8 · CRITICAL ⚠ CISA KEV — ACTIVELY EXPLOITED

On the CISA KEV catalog

Confirmed exploited in the wild. Added 2022-05-24. Federal remediation due 2022-06-14.
Required action: Apply updates per vendor instructions.

Summary

Microsoft Windows XP SP3, Windows XP x64 XP2, Windows Server 2003 SP2, Windows Vista, Windows 7 SP1, Windows Server 2008 SP2 and R2 SP1, Windows 8, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016 allow an attacker to take control of the affected system when Windows Search fails to handle objects in memory, aka "Windows Search Remote Code Execution Vulnerability".

CVSS 3.1 breakdown

Base score	9.8 (CRITICAL)
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector	NETWORK
Attack complexity	LOW
Privileges required	NONE
User interaction	NONE
Scope	UNCHANGED
Confidentiality	HIGH
Integrity	HIGH
Availability	HIGH

Weakness type (CWE)

CWE-281

Affected products

Microsoft windows 10 1507Microsoft windows 10 1511Microsoft windows 10 1607Microsoft windows 10 1703Microsoft windows 7Microsoft windows 8.1Microsoft windows rt 8.1Microsoft windows server 2008Microsoft windows server 2012Microsoft windows server 2016

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References

Data: NIST NVD + CISA KEV. NVD last modified 2026-04-22. Always verify against the vendor advisory before acting.