Actively exploited in the wild
Microsoft XML Core Services Information Disclosure Vulnerability
Microsoft - XML Core Services · Listed in the CISA KEV since 2022-05-24. This indicates confirmed attacks in production environments.
Required action: Apply updates per vendor instructions.
CVE-2017-0022
MediumCVSS 6.5KEVSummary
Microsoft XML Core Services (MSXML) in multiple Windows versions improperly handles objects in memory, allowing attackers to test for files on disk via a crafted web site (Information Disclosure).
Risk Assessment
An attacker can remotely determine which files exist on a victim's disk, aiding reconnaissance and planning of further attacks.
Recommendation
Apply Microsoft security updates for MSXML on affected Windows versions.
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Original NVD description (English source)
Microsoft XML Core Services (MSXML) in Windows 10 Gold, 1511, and 1607; Windows 7 SP1; Windows 8.1; Windows RT 8.1; Windows Server 2008 SP2 and R2 SP1; Windows Server 2012 Gold and R2; Windows Server 2016; and Windows Vista SP2 improperly handles objects in memory, allowing attackers to test for files on disk via a crafted web site, aka "Microsoft XML Information Disclosure Vulnerability."

