CVE-2020-8515
Last modified
CVE-2020-8515 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 99.99% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitation Status
This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Draytek | Vigor2960 Firmware | 1.3.1 | Beta |
| Draytek | Vigor300b Firmware | 1.3.3 | Beta |
| Draytek | Vigor300b Firmware | 1.4.2.1 | Beta |
| Draytek | Vigor300b Firmware | 1.4.4 | Beta |
| Draytek | Vigor3900 Firmware | 1.4.4 | Beta |
References
- http://packetstormsecurity.com/files/156979/DrayTek-Vigor2960-Vigor3900-Vigor300B-Remote-Command-Execution.htmlExploit, Third Party Advisory, VDB Entry
- https://sku11army.blogspot.com/2020/01/draytek-unauthenticated-rce-in-draytek.htmlPermissions Required, Third Party Advisory
- http://packetstormsecurity.com/files/156979/DrayTek-Vigor2960-Vigor3900-Vigor300B-Remote-Command-Execution.htmlExploit, Third Party Advisory, VDB Entry
- https://sku11army.blogspot.com/2020/01/draytek-unauthenticated-rce-in-draytek.htmlPermissions Required, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-8515US Government Resource
Timeline
- Published
- Last Modified
- Status
- Analyzed
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