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Findings

CVE-2020-15415

DrayTek Multiple Vigor Routers OS Command Injection Vulnerability

Published Jun 30, 2020 · updated Jun 16, 2026 · draytek vigor3900 firmware

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.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 30, 2020 · Catalog

    Detected

    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.

  2. Sep 30, 2024 · CISA KEV

    Known exploited

    Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

  3. Oct 21, 2024 · CISA KEV

    Remediation due

    Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

  4. Jun 16, 2026 · Catalog

    Updated

    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.

Required action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CISA due date Oct 21, 2024

Affected

  • cpe draytek/vigor2960 firmwareversion unspecified
  • cpe draytek/vigor300b firmwareversion unspecified
  • cpe draytek/vigor3900 firmwareversion unspecified
  • vendor DrayTek Multiple Vigor Routersversion unspecified

Sources

  • CISA KEVConfirmed exploitationCVE-2020-15415

    DrayTek Vigor3900, Vigor2960, and Vigor300B devices contain an OS command injection vulnerability in cgi-bin/mainfunction.cgi/cvmcfgupload that allows for remote code execution via shell metacharacters in a filename when the text/x-python-script content type is used.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2020-15415

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2020-15415

    30-day exploitation probability 84.5%

    first.org
  • NIST NVDVulnerability recordCVE-2020-15415

    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.

    nvd.nist.gov

References