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Vulnerability record · CVE-2020-14472 · published 24 June 2020

CVE-2020-14472: Draytek vigor300b firmware command injection vulnerability

Draytek · Vigor300b Firmware

On Draytek Vigor3900, Vigor2960, and Vigor 300B devices before 1.5.1.1, there are some command-injection vulnerabilities in the mainfunction.cgi file.

9.8 CVSS 3.1 Critical EPSS 2.9% · top 13.4% CWE-77 · Command injection
9.8CVSS 3.1 base score, v2 7.5
2.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
4References, 4 tagged exploit
17 Jun 2026Last modified by NVD

Description

On Draytek Vigor3900, Vigor2960, and Vigor 300B devices before 1.5.1.1, there are some command-injection vulnerabilities in the mainfunction.cgi file.

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

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://gist.github.com/Cossack9989/fa9718434ceee4e6d4f6b0ad672c10f1 ExploitThird Party Advisory
https://gist.github.com/WinMin/46165779215f1d47ec257210428c0240 ExploitThird Party Advisory
https://gist.github.com/Cossack9989/fa9718434ceee4e6d4f6b0ad672c10f1 ExploitThird Party Advisory
https://gist.github.com/WinMin/46165779215f1d47ec257210428c0240 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2020-15415DrayTek Vigor routers OS command injection in cvmcfguploadDrayTek Vigor3900, Vigor2960 and Vigor300B devices before firmware 1.5.1 allow OS command injection through shell metacharacters in a filename upload…KEVEPSS 84%analysed9.8CVE-2020-8515DrayTek Vigor routers unauthenticated OS command injection in web managementDrayTek Vigor2960, Vigor3900 and Vigor300B firmware pass shell metacharacters to cgi-bin/mainfunction.cgi, allowing OS command injection. Because the…KEVEPSS 100%analysed6.9CVE-2024-12987DrayTek Vigor router web interface OS command injectionDrayTek Vigor2960 and Vigor300B firmware 1.5.1.4 contain an OS command injection flaw in the /cgi-bin/mainfunction.cgi/apmcfgupload endpoint of the w…KEVEPSS 98%analysed9.8CVE-2024-51252Draytek vigor3900 firmware os command injection vulnerabilityIn Draytek Vigor3900 1.5.1.3, attackers can inject malicious commands into mainfunction.cgi and execute arbitrary commands by calling the restore fun…EPSS 0.82%9.8CVE-2024-51255Draytek vigor3900 firmware command injection vulnerabilityDrayTek Vigor3900 1.5.1.3 allows attackers to inject malicious commands into mainfunction.cgi and execute arbitrary commands by calling the ruequest_…EPSS 0.39%9.8CVE-2024-51260Draytek vigor3900 firmware command injection vulnerabilityDrayTek Vigor3900 1.5.1.3 allows attackers to inject malicious commands into mainfunction.cgi and execute arbitrary commands by calling the acme_proc…EPSS 0.62%9.8CVE-2024-51259Draytek vigor3900 firmware command injection vulnerabilityDrayTek Vigor3900 1.5.1.3 allows attackers to inject malicious commands into mainfunction.cgi and execute arbitrary commands by calling the setup_cac…EPSS 0.35%9.8CVE-2024-51298Draytek vigor3900 firmware code injection vulnerabilityIn Draytek Vigor3900 1.5.1.3, attackers can inject malicious commands into mainfunction.cgi and execute arbitrary commands by calling the doGRETunnel…EPSS 0.62%

Source: NIST National Vulnerability Database (record CVE-2020-14472), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.