Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

Go to Calendar     Go to Press Room     Go to Newsletters subscription

Search

CVE-2021-34947

Severity CVSS v4.0:
Pending analysis
Type:
CWE-787 Out-of-bounds Write
Publication date:
07/05/2024
Last modified:
14/08/2025

Description

NETGEAR R7800 net-cgi Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R7800 routers. Authentication is not required to exploit this vulnerability.<br /> <br /> The specific flaw exists within the parsing of the soap_block_table file. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated data structure. An attacker can leverage this vulnerability to execute code in the context of root.<br /> . Was ZDI-CAN-13055.

Impact

Vector 3.x
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 8.80 HIGH
Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Adjacent
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
8.80
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:netgear:d7800_firmware:*:*:*:*:*:*:*:* 1.0.1.64 (excluding)
cpe:2.3:h:netgear:d7800:-:*:*:*:*:*:*:*
cpe:2.3:o:netgear:ex2700_firmware:*:*:*:*:*:*:*:* 1.0.1.66 (excluding)
cpe:2.3:h:netgear:ex2700:-:*:*:*:*:*:*:*
cpe:2.3:o:netgear:ex6100_firmware:*:*:*:*:*:*:*:* 1.0.1.106 (excluding)
cpe:2.3:h:netgear:ex6100:v2:*:*:*:*:*:*:*
cpe:2.3:o:netgear:ex6150_firmware:*:*:*:*:*:*:*:* 1.0.1.106 (excluding)
cpe:2.3:h:netgear:ex6150:v2:*:*:*:*:*:*:*
cpe:2.3:o:netgear:ex6200_firmware:*:*:*:*:*:*:*:* 1.0.1.86 (excluding)
cpe:2.3:h:netgear:ex6200:v2:*:*:*:*:*:*:*
cpe:2.3:o:netgear:ex6250_firmware:*:*:*:*:*:*:*:* 1.0.0.146 (excluding)
cpe:2.3:h:netgear:ex6250:-:*:*:*:*:*:*:*
cpe:2.3:o:netgear:ex6400_firmware:*:*:*:*:*:*:*:* 1.0.2.164 (excluding)
cpe:2.3:h:netgear:ex6400:-:*:*:*:*:*:*:*
cpe:2.3:o:netgear:ex6400v2_firmware:*:*:*:*:*:*:*:* 1.0.0.146 (excluding)

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


References to Advisories, Solutions, and Tools