CVE-2021-32630

Name: CVE-2021-32630
Creator: NVD / NIST
Published: 2021-05-20T17:15:07.773+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.56%

Last modified Jun 17, 2026

CVE-2021-32630 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Admidio is a free, open source user management system for websites of organizations and groups. In Admidio before version 4.0.4, there is an authenticated RCE via .phar file upload. EPSS estimates a 1.56% chance of exploitation in the next 30 days.

Description

Admidio is a free, open source user management system for websites of organizations and groups. In Admidio before version 4.0.4, there is an authenticated RCE via .phar file upload. A php web shell can be uploaded via the Documents & Files upload feature. Someone with upload permissions could rename the php shell with a .phar extension, visit the file, triggering the payload for a reverse/bind shell. This can be mitigated by excluding a .phar file extension to be uploaded (like you did with .php .phtml .php5 etc). The vulnerability is patched in version 4.0.4.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

1.56%

72.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-434

Affected Software

Vendor	Product	Versions
Admidio	Admidio	< 4.0.4

References

https://github.com/Admidio/admidio/issues/994Third Party Advisory
https://github.com/Admidio/admidio/releases/tag/v4.0.4Release Notes, Third Party Advisory
https://github.com/Admidio/admidio/security/advisories/GHSA-xpqj-67r8-25j2Exploit, Third Party Advisory
https://github.com/Admidio/admidio/issues/994Third Party Advisory
https://github.com/Admidio/admidio/releases/tag/v4.0.4Release Notes, Third Party Advisory
https://github.com/Admidio/admidio/security/advisories/GHSA-xpqj-67r8-25j2Exploit, Third Party Advisory

Timeline

Published: May 20, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-32630?

How severe is CVE-2021-32630?

CVE-2021-32630 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.56% probability of exploitation in the next 30 days.

How do I fix CVE-2021-32630?

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-2021-32630?

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

Scan your code now

Source: NVD / NIST