CVE-2017-20190

N/A Unknown
Published: March 27, 2024 Modified: April 15, 2026
View on NVD

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.

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References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://aka.ms/windowsbugbar
Source: cve@mitre.org
https://aka.ms/windowsbugbar
Source: af854a3a-2127-422b-91ae-364da2661108
https://en.wikipedia.org/wiki/Zalgo_text
Source: af854a3a-2127-422b-91ae-364da2661108
https://talk.dynalist.io/t/dynalist-is-vulnerable-to-zalgo/1234
Source: af854a3a-2127-422b-91ae-364da2661108

6 reference(s) from NVD

Quick Stats

CVSS v3 Score
N/A / 10.0
EPSS (Exploit Probability)
0.1%
27th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)