CVE-2017-8543

Name: CVE-2017-8543
Creator: NVD / NIST
Published: 2017-06-15T01:29:04.49+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10Actively ExploitedEPSS 73.76%

Last modified Jun 17, 2026

CVE-2017-8543 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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".. CISA has confirmed active exploitation in the wild. EPSS estimates a 73.76% chance of exploitation in the next 30 days.

Description

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".

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

73.76%

99.4th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Jun 14, 2022.

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Microsoft	Windows 10 1507	All versions	—
Microsoft	Windows 10 1511	All versions	—
Microsoft	Windows 10 1607	All versions	—
Microsoft	Windows 10 1703	All versions	—
Microsoft	Windows 7	All versions	Sp1
Microsoft	Windows 8.1	All versions	—
Microsoft	Windows Rt 8.1	All versions	—
Microsoft	Windows Server 2008	All versions	Sp2
Microsoft	Windows Server 2008	r2	Sp1
Microsoft	Windows Server 2012	All versions	—
Microsoft	Windows Server 2012	r2	—
Microsoft	Windows Server 2016	All versions	—

References

http://www.securityfocus.com/bid/98824Broken Link, Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038667Broken Link, Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8543Mitigation, Patch, Vendor Advisory
http://www.securityfocus.com/bid/98824Broken Link, Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038667Broken Link, Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8543Mitigation, Patch, Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-8543US Government Resource

Timeline

Published: Jun 15, 2017
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2017-8543?

How severe is CVE-2017-8543?

CVE-2017-8543 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 73.76% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2017-8543?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-8543?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST