CVE-2021-26630: Handysoft Groupware

Critical severity, CVSS 9.8. EPSS: 0.8% chance of exploitation in the next 30 days.

Improper input validation vulnerability in HANDY Groupware’s ActiveX moudle allows attackers to download or execute arbitrary files. This vulnerability can be exploited by using the file download or execution path as the parameter value of the vulnerable function.

Affected products

• Handysoft Groupware: before 1.7.4.7 (fixed in 1.7.4.7); from 2.0.0.0, before 2.0.3.7 (fixed in 2.0.3.7); from 4.0.0.0, before 4.0.1.8 (fixed in 4.0.1.8)

Published 2022-05-19. Last modified 2026-06-17.