CVE-2020-10823

Severity CVSS v4.0:

Pending analysis

Type:

CWE-787 Out-of-bounds Write

Publication date:

26/03/2020

Last modified:

05/05/2025

Description

A stack-based buffer overflow in /cgi-bin/activate.cgi through var parameter on Draytek Vigor3900, Vigor2960, and Vigor300B devices before 1.5.1 allows remote attackers to achieve code execution via a remote HTTP request (issue 1 of 3).

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

9.80

Severity 3.x

CRITICAL

Vector 2.0

AV:N/AC:L/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0

7.50

Severity 2.0

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:draytek:vigor300b_firmware::::::::		1.5.1 (excluding)
cpe:2.3:h:draytek:vigor300b:-:::::::*
cpe:2.3:o:draytek:vigor3900_firmware::::::::		1.5.1 (excluding)
cpe:2.3:h:draytek:vigor3900:-:::::::*
cpe:2.3:o:draytek:vigor2960_firmware::::::::		1.5.1 (excluding)
cpe:2.3:h:draytek:vigor2960:-:::::::*

To consult the complete list of CPE names with products and versions, see this page

CVE-2020-10823

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools