Security readout for executives and security teams
This is a critical unauthenticated remote code execution flaw in certain DrayTek router beta firmware. An attacker who can reach the affected web management interface could run code as root, giving full device control. Because CISA lists it as known exploited, exposed devices should be treated as urgent remediation targets. Organizations are exposed if they run the named DrayTek Vigor2960, Vigor3900, or Vigor300B beta firmware, especially where router web management is reachable from untrusted networks or the internet. Prioritize immediate remediation for any exposed affected router. This vulnerability can give attackers full control of perimeter networking equipment and is listed by CISA as known exploited. Mitigation focus: Upgrade affected DrayTek Vigor3900, Vigor2960, and Vigor300B devices to version 1.5.1 or later.; Restrict web management access to trusted administrative networks until devices are patched.; Remove internet exposure for router management interfaces wherever possible..
Michael Williams reviewed this cited source version on .
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CWE-78: Command execution behavior lookup
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Open ATT&CK lookupExecution behavior lookup
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Open ATT&CK lookupCVE-2020-8515 mapping review
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Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
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CISA KEV status
CVSS vector scores
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CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://sku11army.blogspot.com/2020/01/draytek-unauthenticated-rce-in-draytek.htmlCVE reference · x_refsource_MISC
- https://www.draytek.com/about/security-advisory/vigor3900-/-vigor2960-/-vigor300b-router-web-management-page-vulnerability-%28cve-2020-8515%29/CVE reference · x_refsource_MISC
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-8515CVE reference · government-resource
Products and packages named in the record
CWE details
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Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.