CVE-2020-8515

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.

CVSS v3.1 NVD

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

CVSS v2.0 NVD

10.0 HIGHAV:N/AC:L/Au:N/C:C/I:C/A:C

EPSS

99.99% chance of exploitation in the next 30 days, 100th percentile

CISA KEV

added 2021-11-03

Nuclei

critical · CWE-78

Published

2020-02-01

Updated

2025-10-21

Proof-of-concept exploits (3)

• http://packetstormsecurity.com/files/156979/DrayTek-Vigor2960-Vigor3900-Vigor300B-Remote-…
• darrenmartyn/CVE-2020-85155★ · 2021-09-04
• imjdl/CVE-2020-8515-PoC14★ · 2020-03-30

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2020/CVE-2020-8515.yaml

ExploitDB entries (1)

• https://www.exploit-db.com/exploits/48268

Exploit collections (2)

• draytek-cve-2020-8515.ymlchaitin/xray
• CVE-2020-8515.yamlzan8in/afrog

Security advisories

• https://www.draytek.com/about/security-advisory/vigor3900-/-vigor2960-/-vigor300b-router-…
• https://sku11army.blogspot.com/2020/01/draytek-unauthenticated-rce-in-draytek.html

References

• CVE Record
• NVD entry

Related

• CVE-2020-25223
• CVE-2020-7373
• CVE-2020-9054
• CVE-2012-4431
• CVE-2019-11510
• CVE-2019-16278