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Vulnerabilities

Vulnerability · CVE-2021-20001

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 (~/pub

Published Feb 11, 2022 · catalog updated Oct 15, 2026 · It was discovered, that

Check if you run it

No confirmed exploitation is on record for CVE-2021-20001. EPSS is 1.62%. Act only if a listed version of It was discovered, that is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (It was discovered, that).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Critical9.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.62%
Remediation
Advisory link
Affected products
Debian:12 debian-edu-config · Debian:13 debian-edu-config

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Debian:12 debian-edu-config0 → 2.12.16
  • Debian:13 debian-edu-config0 → 2.12.16

How to fix CVE-2021-20001

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2021-20001. EPSS is 1.62%. Act only if a listed version of It was discovered, that is installed.

Which versions are affected?

Compare what you have installed with 0 → 2.12.16. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 1.62%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Debian security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 11, 2022 · OpenSSF OSV / OSV Scanner

    Detected

    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.

  2. Oct 15, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    debian-edu-config fixed in 2.12.16; debian-edu-config fixed in 2.12.16

  3. Oct 15, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    debian-edu-config fixed in 2.12.16

  4. Oct 15, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    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.

Sources

References

Freshness

Last verified in this catalog Oct 16, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.