CVE-2023-45159: 1e Client

High severity, CVSS 8.4. EPSS: 0.2% chance of exploitation in the next 30 days.

1E Client installer can perform arbitrary file deletion on protected files.   A non-privileged user could provide a symbolic link or Windows junction to point to a protected directory in the installer that the 1E Client would then clear on service startup. A hotfix is available from the 1E support portal that forces the 1E Client to check for a symbolic link or junction and if it finds one refuses to use that path and instead creates a path involving a random GUID. for v8.1 use hotfix Q23097 for v8.4 use hotfix Q23105 for v9.0 use hotfix Q23115 for SaaS customers, use 1EClient v23.7 plus hotfix Q23121

Affected products

• 1e Client: version 8.1.2.62 only; version 8.4.1.159 only; version 9.0.1.88 only; version 23.7.1.151 only

Published 2023-10-05. Last modified 2026-06-17.