CVE-2020-15415

Name: CVE-2020-15415
Creator: NVD / NIST
Published: 2020-06-30T14:15:11.953+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10Actively ExploitedEPSS 84.60%

Last modified Jun 17, 2026

CVE-2020-15415 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. On DrayTek Vigor3900, Vigor2960, and Vigor300B devices before 1.5.1, cgi-bin/mainfunction.cgi/cvmcfgupload allows remote command execution via shell metacharacters in a filename when the text/x-python-script content type is used, a different issue than CVE-2020-14472.. CISA has confirmed active exploitation in the wild. EPSS estimates a 84.60% chance of exploitation in the next 30 days.

Description

On DrayTek Vigor3900, Vigor2960, and Vigor300B devices before 1.5.1, cgi-bin/mainfunction.cgi/cvmcfgupload allows remote command execution via shell metacharacters in a filename when the text/x-python-script content type is used, a different issue than CVE-2020-14472.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

84.60%

99.7th 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 Oct 21, 2024.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Draytek	Vigor3900 Firmware	< 1.5.1
Draytek	Vigor2960 Firmware	< 1.5.1
Draytek	Vigor300b Firmware	< 1.5.1

References

https://github.com/CLP-team/Vigor-Commond-InjectionExploit
https://www.draytek.com/about/security-advisoryVendor Advisory
https://github.com/CLP-team/Vigor-Commond-InjectionExploit
https://www.draytek.com/about/security-advisoryVendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-15415US Government Resource

Timeline

Published: Jun 30, 2020
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2020-15415?

How severe is CVE-2020-15415?

CVE-2020-15415 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 84.60% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2020-15415?

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-2020-15415?

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

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Source: NVD / NIST