CVE-2020-10221 — rConfig OS Command Injection Vulnerability

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.

01What is this vulnerability?

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.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2021-11-03. Ransomware use: Unknown.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2020-03-08T21:03:47.000Z
• Last modified: 2025-10-21T23:35:49.645Z
• Added to CISA KEV: 2021-11-03
• BOD 22-01 due: 2022-05-03

09References

• cwe.mitre.org — https://cwe.mitre.org/data/definitions/78.html
• engindemirbilek.github.io — https://engindemirbilek.github.io/rconfig-3.93-rce
• github.com — https://github.com/EnginDemirbilek/EnginDemirbilek.github.io/blob/master/rconfig…
• packetstormsecurity.com — http://packetstormsecurity.com/files/156687/rConfig-3.93-Authenticated-Remote-Co…