CVE-2021-20001

Name: CVE-2021-20001
Creator: NVD / NIST
Published: 2022-02-11T20:15:07.387+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.59%

Last modified Jun 17, 2026

CVE-2021-20001 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 1.59% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.59%

72.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-276

Affected Software

Vendor	Product	Versions
Skolelinux	Debian-Edu-Config	< 2.12.16
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Debian	Debian Linux	11.0

References

https://lists.debian.org/debian-lts-announce/2022/02/msg00012.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-security-announce/2022/msg00039.htmlMailing List, Third Party Advisory
https://salsa.debian.org/debian-edu/debian-edu-config/-/commit/4d39a5888d193567704238f8c035f8d17cfe34e5Patch, Third Party Advisory
https://www.debian.org/security/2022/dsa-5072Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/02/msg00012.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-security-announce/2022/msg00039.htmlMailing List, Third Party Advisory
https://salsa.debian.org/debian-edu/debian-edu-config/-/commit/4d39a5888d193567704238f8c035f8d17cfe34e5Patch, Third Party Advisory
https://www.debian.org/security/2022/dsa-5072Third Party Advisory

Timeline

Published: Feb 11, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-20001?

How severe is CVE-2021-20001?

CVE-2021-20001 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.59% probability of exploitation in the next 30 days.

How do I fix CVE-2021-20001?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-20001?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST