CVE-2017-0022VulnerabilityPublished 05/24/2022Updated 10/24/2026

CVE-2017-0022: Microsoft XML Core Services Information Disclosure Vulnerability

Affects Microsoft XML Core ServicesSource CISA KEV

Severity

High

No CVSS score published yet

Exploitation: Actively exploited – in CISA KEV since 05/24/2022
KEV deadline: 06/14/2022
EPSS: 18.1% chance of exploitation in 30 days – higher than 97% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

nvd.nist.gov/vuln/detail/CVE-2017-0022 (opens in a new tab)

Description

CVE-2017-0022 is a high-severity information disclosure vulnerability in Microsoft XML Core Services (MSXML). It arises from improper handling of objects in memory, which allows attackers to test for the presence of files on disk via a crafted website. This vulnerability has been exploited in the wild. No specific affected versions or patch information is provided in the available data.

Summary

Microsoft XML Core Services (MSXML) improperly handles objects in memory, enabling attackers to perform file existence tests on the disk by visiting a specially crafted website. This behavior constitutes an information disclosure vulnerability identified as CVE-2017-0022. The vulnerability has been observed to be exploited in the wild, indicating active threat usage. No explicit patch or remediation details are included in the provided information.

Impact

The vulnerability allows attackers to disclose information about files on the victim's disk by leveraging improper memory handling in MSXML. This can lead to unauthorized knowledge about the system's file structure, which may aid further attacks. The vulnerability is confirmed to be exploited in the wild, increasing its risk profile.

Mitigation

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or official fix information is provided, users should monitor Microsoft advisories for updates and apply any available patches promptly once released.

Weaknesses

CWE-200Information Exposure (opens in a new tab)

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 11:42:37 UTC

Weaknesses

References

Related threats