CVE-2021-39273: Xerosecurity SN1PER

High severity, CVSS 8.8. EPSS: 2.7% chance of exploitation in the next 30 days.

In XeroSecurity Sn1per 9.0 (free version), insecure permissions (0777) are set upon application execution, allowing an unprivileged user to modify the application, modules, and configuration files. This leads to arbitrary code execution with root privileges.

Affected products

• Xerosecurity SN1PER: version 9.0 only

Published 2021-08-19. Last modified 2026-06-17.