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Vulnerability record · CVE-2020-19664 · published 31 December 2020

CVE-2020-19664: Draytek vigor2960 firmware os command injection vulnerability

Draytek · Vigor2960 Firmware

DrayTek Vigor2960 1.5.1 allows remote command execution via shell metacharacters in a toLogin2FA action to mainfunction.cgi.

8.8 CVSS 3.1 High EPSS 5.5% · top 7.5% CWE-78 · OS command injection
8.8CVSS 3.1 base score, v2 6.5
5.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 4 tagged exploit
17 Jun 2026Last modified by NVD

Description

DrayTek Vigor2960 1.5.1 allows remote command execution via shell metacharacters in a toLogin2FA action to mainfunction.cgi.

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

Affected products

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

References

LinkTags
https://github.com/minghangshen/bug_poc ExploitThird Party Advisory
https://nosec.org/home/detail/4631.html ExploitThird Party Advisory
https://www.draytek.com/about/security-advisory/vigor3900-/-vigor2960-/-vigor300b-remote-code-injection/execution-vulner
https://github.com/minghangshen/bug_poc ExploitThird Party Advisory
https://nosec.org/home/detail/4631.html ExploitThird Party Advisory
https://www.draytek.com/about/security-advisory/vigor3900-/-vigor2960-/-vigor300b-remote-code-injection/execution-vulner

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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-2021-42911Draytek vigor2960 firmware vulnerabilityA Format String vulnerability exists in DrayTek Vigor 2960 <= 1.5.1.3, DrayTek Vigor 3900 <= 1.5.1.3, and DrayTek Vigor 300B <= 1.5.1.3 in the mainfu…EPSS 3.5%9.8CVE-2021-43118Draytek vigor2960 firmware command injection vulnerabilityA Remote Command Injection vulnerability exists in DrayTek Vigor 2960 1.5.1.3, DrayTek Vigor 3900 1.5.1.3, and DrayTek Vigor 300B 1.5.1.3 via a craft…EPSS 35%9.8CVE-2020-14473Draytek vigor300b firmware out-of-bounds write vulnerabilityStack-based buffer overflow vulnerability in Vigor3900, Vigor2960, and Vigor300B with firmware before 1.5.1.1.EPSS 2.3%9.8CVE-2020-14472Draytek vigor300b firmware command injection vulnerabilityOn Draytek Vigor3900, Vigor2960, and Vigor 300B devices before 1.5.1.1, there are some command-injection vulnerabilities in the mainfunction.cgi file.EPSS 2.9%9.8CVE-2020-14993Draytek vigor300b firmware out-of-bounds write vulnerabilityA stack-based buffer overflow on DrayTek Vigor2960, Vigor3900, and Vigor300B devices before 1.5.1.1 allows remote attackers to execute arbitrary code…EPSS 5.3%

Source: NIST National Vulnerability Database (record CVE-2020-19664), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.