CVE-2020-15415DrayTek Multiple Vigor Routers OS Command Injection Vulnerability

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.

9.8 CRITICALEPSS 84.48%⚡ Known Exploited (CISA KEV)NVD: Analyzed

Last updated: 2026-06-17 02:56 UTC

OverviewCVSS details

9.8CRITICALCVSS 3.1

Score source: NVD
NVD status: Analyzed
Published: Jun 30, 2020
Assigner: mitre

Affected

vigor3900 firmware (draytek)

Versions: before 1.5.1
Fixed in: 1.5.1

+2 more products →

Exploitation

Public exploit: Yes · 1 reference
CISA KEV: Listed · Sep 30, 2024
KEV due date: Oct 21, 2024
Ransomware use: Unknown
SSVC: Exploitation active · Automatable yes · Impact total

EPSS · FIRST, scored Nov 8

84.48%chance of exploitation in 30 days

Higher than 99.70% of CVEs

CVSS 3.1 · NVD

9.8Critical

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

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

CVSS 2.0 · NVD

7.5High

AV:N/AC:L/Au:N/C:P/I:P/A:P

Attack vector: Network
Attack complexity: Low
Authentication: None
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: Partial

NVD status: Analyzed

Overview Affected Products References

NVD CVE.org

Overview

Severity

Score	Severity	Version	Vector String
9.8	CRITICAL	3.1NVD	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5	HIGH	2.0NVD	AV:N/AC:L/Au:N/C:P/I:P/A:P

CISA required action

⚡ Known exploited · remediation due Oct 21, 2024

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

Details

CVE ID: CVE-2020-15415
Status: Analyzed
Assigner (CNA): mitre
Published: Jun 30, 2020
Last modified: 2026-06-17 02:56 UTC
Weaknesses: CWE-78

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-09 13:15 UTC.