Rconfig
CVE-2020-12255
HIGH
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V5 - File Handling File type validation, storage isolation
MITRE ATT&CK
2 techniques across 2 tactics: Command and Control, Persistence The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 8.8 (HIGH). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required. |
| Exploit ScenarioDerived | A remote attacker could upload malicious files that can be executed on the server by sending crafted requests to the affected application. |
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Alert meAnalysisAI
rConfig 3.9.4 is vulnerable to remote code execution due to improper validation in the file upload functionality. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate file types server-side, store uploads outside webroot, use random filenames, scan for malware.
Affects your stack
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Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Unrestricted File Upload (CWE-434), which allows attackers to upload malicious files that can be executed on the server. rConfig 3.9.4 is vulnerable to remote code execution due to improper validation in the file upload functionality. vendor.crud.php accepts a file upload by checking content-type without considering the file extension and header. Thus, an attacker can exploit this by uploading a .php file to vendor.php that contains arbitrary PHP code and changing the content-type to image/gif. Affected products include: Rconfig.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
rConfig 3.9.4 is vulnerable to remote code execution due to improper validation in the file upload functionality. vendor.crud.php accepts a file upload by checking content-type without considering the file extension and header. Thus, an attacker can exploit this by uploading a .php file to vendor.php that contains arbitrary PHP code and changing the content-type to image/gif.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Malicious file upload attacks exploit insufficient validation when web applications accept user-provided files.
Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.
Affected Products (CPE)NVD
lib/ajaxHandlers/ajaxAddTemplate.php in rConfig through 3.94 allows remote attackers to execute arbitrary OS commands vi
An issue was discovered in rConfig through 3.9.4. Rated critical severity (CVSS 9.8), this vulnerability is remotely exp
An issue was discovered in rConfig 3.9.2. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable
An arbitrary file upload vulnerability in rconfig v3.9.6 allows attackers to execute arbitrary code via a crafted PHP fi
lib/crud/userprocess.php in rConfig 3.9.x before 3.9.7 has an authentication bypass, leading to administrator account cr
rConfig 3.9.4 and previous versions has unauthenticated snippets.inc.php SQL injection. Rated critical severity (CVSS 9.
rConfig 3.9.4 and previous versions has unauthenticated devices.inc.php SQL injection. Rated critical severity (CVSS 9.8
rConfig 3.9.4 and previous versions has unauthenticated compliancepolicyelements.inc.php SQL injection. Rated critical s
rConfig 3.9.4 and previous versions has unauthenticated compliancepolicies.inc.php SQL injection. Rated critical severit
rConfig before 3.9.5 allows command injection by sending a crafted GET request to lib/crud/search.crud.php since the nod
rConfig 3.9.6 is affected by SQL Injection. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable,
Insecure permission of chmod command on rConfig server 3.9.6 exists. Rated high severity (CVSS 8.8), this vulnerability
Exploit-DB