CVE-2021-45642

What it is

Certain NETGEAR devices are affected by incorrect configuration of security settings. This affects D7800 before 1.0.1.64, EX6250 before 1.0.0.134, EX7700 before 1.0.0.222, LBR20 before 2.6.3.50, RBS50Y before 2.7.3.22, R8900 before 1.0.5.26, R9000 before 1.0.5.26, XR450 before 2.3.2.66, XR500 before 2.3.2.66, XR700 before 1.0.1.36, EX7320 before 1.0.0.134, RAX120 before 1.2.2.24, EX7300v2 before 1.0.0.134, RAX120v2 before 1.2.2.24, EX6410 before 1.0.0.134, RBR10 before 2.7.3.22, RBR20 before 2.7.3.22, RBR40 before 2.7.3.22, RBR50 before 2.7.3.22, EX6420 before 1.0.0.134, RBS10 before 2.7.3.22, RBS20 before 2.7.3.22, RBS40 before 2.7.3.22, RBS50 before 2.7.3.22, EX6400v2 before 1.0.0.134, RBK12 before 2.7.3.22, RBK20 before 2.7.3.22, RBK40 before 2.7.3.22, and RBK50 before 2.7.3.22.

At a glance

Exploitability

Can be exploited from the same network segment with an admin-level account. High risk of data tampering.

Exploit odds

1.0% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2021-12-26 01:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 04:13 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 1.0% in the next 30 days (EPSS).
• Severity: 7.5 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2021-12-26 01:15 UTC

Last modified

2026-06-17 04:13 UTC

Exploit probability

1.0% · EPSS, next 30 days

Record status

Modified

Affected

• Netgear d7800 Firmware < 1.0.1.64
• Netgear ex6250 Firmware < 1.0.0.134
• Netgear ex7700 Firmware < 1.0.0.222
• Netgear lbr20 Firmware < 2.6.3.50
• Netgear rbs50y Firmware < 2.7.3.22
• Netgear rbs50 Firmware < 2.7.3.22
• Netgear rbs20 Firmware < 2.7.3.22
• Netgear rbs10 Firmware < 2.7.3.22

Attack profile CVSS 3.1 · 7.5

Attack vector

Adjacent network

Complexity

Low

Privileges needed

High

User interaction

None

Scope

Changed

Confidentiality

Low

Integrity

High

Availability

Low

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