CVE-2021-20001: Debian Linux

Critical severity, CVSS 9.8. EPSS: 1.6% chance of exploitation in the next 30 days.

It was discovered, that debian-edu-config, a set of configuration files used for the Debian Edu blend, before 2.12.16 configured insecure permissions for the user web shares (~/public_html), which could result in privilege escalation.

Affected products

• Debian Debian Linux: version 9.0 only; version 10.0 only; version 11.0 only
• Skolelinux Debian-Edu-Config: before 2.12.16 (fixed in 2.12.16)

Published 2022-02-11. Last modified 2026-06-17.