CVE-2020-25757

Published: Dec 15, 2020Modified: Jun 17, 2026

8.8

Vector

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

Exploitability: 2.8 / Impact: 5.9

Source: NVD

Description

A lack of input validation and access controls in Lua CGIs on D-Link DSR VPN routers may result in arbitrary input being passed to system command APIs, resulting in arbitrary command execution with root privileges. This affects DSR-150, DSR-250, DSR-500, and DSR-1000AC with firmware 3.14 and 3.17.

Affected (10)

Products: Dlink: Dsr 150 Firmware, Dsr 150n Firmware, Dsr 250 Firmware, Dsr 250n Firmware, Dsr 500 Firmware, Dsr 500n Firmware, Dsr 500ac Firmware, Dsr 1000 Firmware, Dsr 1000n Firmware, Dsr 1000ac Firmware

10 products

Configuration A

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Dlink Dsr 150 Firmware	Up to 3.17

Running on/with	Platform Versions
Dlink Dsr 150	All versions

Configuration B

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Dlink Dsr 150n Firmware	Up to 3.17

Running on/with	Platform Versions
Dlink Dsr 150n	All versions

Configuration C

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Dlink Dsr 250 Firmware	Up to 3.17

Running on/with	Platform Versions
Dlink Dsr 250	All versions

Configuration D

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Dlink Dsr 250n Firmware	Up to 3.17

Running on/with	Platform Versions
Dlink Dsr 250n	All versions

Configuration E

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Dlink Dsr 500 Firmware	Up to 3.17

Running on/with	Platform Versions
Dlink Dsr 500	All versions

Configuration F

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Dlink Dsr 500n Firmware	All versions

Running on/with	Platform Versions
Dlink Dsr 500n	All versions

Configuration G

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Dlink Dsr 500ac Firmware	Up to 3.17

Running on/with	Platform Versions
Dlink Dsr 500ac	All versions

Configuration H

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Dlink Dsr 1000 Firmware	Up to 3.17

Running on/with	Platform Versions
Dlink Dsr 1000	All versions

Configuration I

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Dlink Dsr 1000n Firmware	Up to 3.17

Running on/with	Platform Versions
Dlink Dsr 1000n	All versions

Configuration J

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Dlink Dsr 1000ac Firmware	Up to 3.17

Running on/with	Platform Versions
Dlink Dsr 1000ac	All versions

Related CWEs

CWE-20

Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

References (6)

https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10195

Source: cve@mitre.org

Vendor Advisory

https://www.digitaldefense.com/news/zero-day-vuln-d-link-vpn-routers/

Source: cve@mitre.org

Third Party Advisory

https://www.dlink.com/en/security-bulletin

Source: cve@mitre.org

Vendor Advisory

https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10195

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

https://www.digitaldefense.com/news/zero-day-vuln-d-link-vpn-routers/

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://www.dlink.com/en/security-bulletin

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

Timeline

No history available yet.