CVE-2017-20190

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.

Status

Deferred - cve@mitre.org

Published

2024-03-27

Last modified

2024-08-08

Weaknesses

CWE-176

Affected products

• Windows (Microsoft)

References

• https://aka.ms/windowsbugbar
• https://en.wikipedia.org/wiki/Zalgo_text
• https://talk.dynalist.io/t/dynalist-is-vulnerable-to-zalgo/1234