CVE-2021-37311: Fcitx 5 Project Fcitx 5

High severity, CVSS 7.5. EPSS: 0.9% chance of exploitation in the next 30 days.

Buffer Overflow vulnerability in fcitx5 5.0.8 allows attackers to cause a denial of service via crafted message to the application's listening port.

Affected products

• Fcitx 5 Project Fcitx 5: version 5.0.8 only

Published 2023-02-03. Last modified 2026-06-17.