PT-2023-3438 · NetGear · Netgear Routers

Hacks_Zach + 1 · Published 2023-01-26 · Updated 2025-08-07 · CVE-2023-35721

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions NETGEAR Multiple Routers (affected versions not specified)

Description This issue allows network-adjacent attackers to compromise the integrity of downloaded information on affected installations of multiple NETGEAR routers. The specific flaw exists within the update functionality, which operates over HTTPS, due to the lack of proper validation of the certificate presented by the server. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Authentication is not required to exploit this issue.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Improper Certificate Validation

Weakness Enumeration

CWE-295

Related Identifiers

BDU:2023-03620

CVE-2023-35721

ZDI-23-893

Affected Products

Netgear Routers

References · 9

• https://zerodayinitiative.com/advisories/ZDI-23-893 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-35721 · Security Note
• https://kb.netgear.com/000065668/Security-Advisory-for-Improper-Remote-Server-Certificate-Validation-on-the-RAX50-PSV-2023-0019 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-35721 · Vendor Advisory
• https://bdu.fstec.ru/vul/2023-03620 · Security Note
• https://t.me/cveNotify/131250 · Telegram Post
• https://twitter.com/CVEnew/status/1787561572761801186 · Twitter Post
• https://vuldb.com/ru/?id.232818 · Note
• https://opennet.ru/opennews/art.shtml?num=59363 · Note