CVE-2017-8543
Published: May 24, 2022
Official Description
Microsoft Windows allows an attacker to take control of the affected system when Windows Search fails to handle objects in memory.
CISA KEV Advisory
Microsoft Windows Search Remote Code Execution Vulnerability
Microsoft Windows allows an attacker to take control of the affected system when Windows Search fails to handle objects in memory.
Apply updates per vendor instructions.
Risk Analysis
Microsoft Windows is vulnerable to a flaw in Windows Search that can allow an attacker to take control of the affected system due to improper handling of objects in memory. The high EPSS score of 0.83796 and inclusion in CISA's KEV indicate a high probability of exploitation.
This vulnerability has been observed under active exploitation in the wild, confirming its use by attackers. Exploitation can be remote, potentially leading to full system compromise.
Users should ensure their Microsoft Windows systems are fully updated with the latest security patches. Consider disabling Windows Search indexing for sensitive directories if not required.
Technical Analysis
CVE-2017-8543 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2017-8543 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Affected Vendors & Products
Exploit & PoC Resources
All References (1)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2017-8543 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1