CVE-2020-10221

Name: CVE-2020-10221
Creator: NVD / NIST
Published: 2020-03-08T22:15:11.12+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10Actively ExploitedEPSS 36.75%

Last modified Jun 17, 2026

CVE-2020-10221 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. lib/ajaxHandlers/ajaxAddTemplate.php in rConfig through 3.94 allows remote attackers to execute arbitrary OS commands via shell metacharacters in the fileName POST parameter.. CISA has confirmed active exploitation in the wild. EPSS estimates a 36.75% chance of exploitation in the next 30 days.

Description

lib/ajaxHandlers/ajaxAddTemplate.php in rConfig through 3.94 allows remote attackers to execute arbitrary OS commands via shell metacharacters in the fileName POST parameter.

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

36.75%

98.3th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by May 3, 2022.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Rconfig	Rconfig	<= 3.9.4

References

http://packetstormsecurity.com/files/156687/rConfig-3.93-Authenticated-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
https://cwe.mitre.org/data/definitions/78.htmlThird Party Advisory
https://engindemirbilek.github.io/rconfig-3.93-rceExploit, Third Party Advisory
https://github.com/EnginDemirbilek/EnginDemirbilek.github.io/blob/master/rconfig-3.93-rce.htmlExploit, Third Party Advisory
http://packetstormsecurity.com/files/156687/rConfig-3.93-Authenticated-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
https://cwe.mitre.org/data/definitions/78.htmlThird Party Advisory
https://engindemirbilek.github.io/rconfig-3.93-rceExploit, Third Party Advisory
https://github.com/EnginDemirbilek/EnginDemirbilek.github.io/blob/master/rconfig-3.93-rce.htmlExploit, Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-10221US Government Resource

Timeline

Published: Mar 8, 2020
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2020-10221?

lib/ajaxHandlers/ajaxAddTemplate.php in rConfig through 3.94 allows remote attackers to execute arbitrary OS commands via shell metacharacters in the fileName POST parameter.

How severe is CVE-2020-10221?

CVE-2020-10221 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 36.75% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2020-10221?

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-2020-10221?

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

Scan your code now

Source: NVD / NIST