CVE-2017-20190

Not scored yetLast modified Jun 17, 2026

Description

Some Microsoft technologies as used in Windows 8 through 11 allow a temporary client-side performance degradation during processing of multiple Unicode combining characters, aka a "Zalgo text" attack. NOTE: third parties dispute whether the computational cost of interpreting Unicode data should be considered a vulnerability.

Metrics

No CVSS score has been published yet.

Weakness enumeration

CWE-176

Affected software

No affected versions have been published.

Timeline

Published
Mar 27, 2024
Last modified
Jun 17, 2026
NVD status
Deferred

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CVE-2017-20190: Unscored | Vulnix