CVE-2021-20001

It was discovered, that debian-edu-config, a set of configuration files used for the Debian Edu...

9.8 CriticalFix available

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

1.62%Up 0.7 points since Feb 13, 2022

What each source reports

NVD Score used 9.8

Record: CVE-2021-20001
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness: CWE-276
Updated: 2026-11-02

CVE List No score

Record: CVE-2021-20001
Updated: 2026-11-02

EUVDEUVD-2021-7464 No score

Record: EUVD-2021-7464
Updated: 2026-11-03

GitHub AdvisoriesGHSA-jxq6-5qhp-mg2v No score

It was discovered, that debian-edu-config, a set of configuration files used for the Debian Edu...

Record: GHSA-jxq6-5qhp-mg2v
Weakness: CWE-276
Updated: 2026-11-02

OSV 9.8

Record: CVE-2021-20001
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2021-20001 9.8

Record: DEBIAN-CVE-2021-20001
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`debian-edu-config` Debian:12	before 2.12.16	2.12.16
`debian-edu-config` Debian:13	before 2.12.16	2.12.16
`debian-edu-config` Debian:9	before 1.929+deb9u5, plus listed versions 1.9291.929+deb9u11.929+deb9u21.929+deb9u31.929+deb9u4	1.929+deb9u5
`debian-edu-config` Debian:10	before 2.10.65+deb10u8, plus listed versions 2.10.652.10.65+deb10u12.10.65+deb10u22.10.65+deb10u32.10.65+deb10u42.10.65+deb10u52.10.65+deb10u62.10.65+deb10u7	2.10.65+deb10u8
`debian-edu-config` Debian:11	before 2.11.56+deb11u3, plus listed versions 2.11.562.11.56+deb11u12.11.56+deb11u2	2.11.56+deb11u3

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-20001 is a critical vulnerability (CVSS 9.8) in Debian Debian-edu-config, published February 11, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.62%, the 76th percentile. Fixed in debian-edu-config 2.12.16.