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CISA Known Exploited Vulnerability

This CVE is actively exploited in the wild. CISA mandates federal agencies to patch immediately.

CVE

CVE-2020-8515

9.8

CVSScritical

Exploitable remotely over the internet · no authentication required.

Description

DrayTek Vigor2960 1.3.1_Beta, Vigor3900 1.4.4_Beta, and Vigor300B 1.3.3_Beta, 1.4.2.1_Beta, and 1.4.4_Beta devices allow remote code execution as root (without authentication) via shell metacharacters to the cgi-bin/mainfunction.cgi URI. This issue has been fixed in Vigor3900/2960/300B v1.5.1.

Attack Vector

Network

Privileges Req.

None

User Interaction

None

Updated Oct 23, 2026View on NVD →

S4E scanner

criticalProduct Based Web Vulnerabilities~30 seconds

CVE-2020-8515 Scanner

CVE-2020-8515 scanner - Remote Code Execution (RCE) vulnerability in DrayTek Vigor2960, Vigor3900, Vigor300B

Used 2.6k times · 3.4k assets checked · url

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