PT-2021-17358 · NetGear · Netgear R7800

84C0 · Published 2021-02-25 · Updated 2022-04-25 · CVE-2021-27254

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 R7800 (affected versions not specified)

Description: This issue allows network-adjacent attackers to bypass authentication on affected installations. The specific flaw exists within the "apply save.cgi" endpoint, resulting from the use of a hard-coded encryption key. An attacker can leverage this to execute arbitrary code in the context of root.

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

Using Hardcoded Credentials

Weakness Enumeration

CWE-259

CWE-798

Related Identifiers

CVE-2021-27254

ZDI-21-252

Affected Products

Netgear R7800

References · 6

• https://zerodayinitiative.com/advisories/ZDI-21-252 · Security Note
• https://osv.dev/vulnerability/CVE-2021-27254 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-27254 · Security Note
• https://kb.netgear.com/000062883/Security-Advisory-for-Multiple-Vulnerabilities-on-Some-Routers-Satellites-and-Extenders · Vendor Advisory
• https://t.me/cibsecurity/24554 · Telegram Post
• https://t.me/cvenotify/10969 · Telegram Post