CVE-2020-27643: 1e Client

Medium severity, CVSS 6.5. EPSS: 1.4% chance of exploitation in the next 30 days.

The %PROGRAMDATA%\1E\Client directory in 1E Client 5.0.0.745 and 4.1.0.267 allows remote authenticated users and local users to create and modify files in protected directories (where they would not normally have access to create or modify files) via the creation of a junction point to a system directory. This leads to partial privilege escalation.

Affected products

• 1e Client: version 4.1.0.267 only; version 5.0.0.745 only

Published 2020-12-29. Last modified 2026-06-17.