CVE-2021-45635

Name: CVE-2021-45635
Creator: NVD / NIST
Published: 2021-12-26T01:15:19.413+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.90%

Last modified Jun 17, 2026

CVE-2021-45635 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects CBR750 before 4.6.3.6, RBK752 before 3.2.17.12, RBR750 before 3.2.17.12, RBS750 before 3.2.17.12, RBK852 before 3.2.17.12, RBR850 before 3.2.17.12, and RBS850 before 3.2.17.12.. EPSS estimates a 0.90% chance of exploitation in the next 30 days.

Description

Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects CBR750 before 4.6.3.6, RBK752 before 3.2.17.12, RBR750 before 3.2.17.12, RBS750 before 3.2.17.12, RBK852 before 3.2.17.12, RBR850 before 3.2.17.12, and RBS850 before 3.2.17.12.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.90%

55.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-77

Affected Software

Vendor	Product	Versions
Netgear	Cbr750 Firmware	< 4.6.3.6
Netgear	Rbk752 Firmware	< 3.2.17.12
Netgear	Rbr750 Firmware	< 3.2.17.12
Netgear	Rbs750 Firmware	< 3.2.17.12
Netgear	Rbk852 Firmware	< 3.2.17.12
Netgear	Rbr850 Firmware	< 3.2.17.12
Netgear	Rbs850 Firmware	< 3.2.17.12

References

https://kb.netgear.com/000064134/Security-Advisory-for-Pre-Authentication-Command-Injection-on-WiFi-Systems-PSV-2020-0491Patch, Vendor Advisory
https://kb.netgear.com/000064134/Security-Advisory-for-Pre-Authentication-Command-Injection-on-WiFi-Systems-PSV-2020-0491Patch, Vendor Advisory

Timeline

Published: Dec 26, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-45635?

How severe is CVE-2021-45635?

CVE-2021-45635 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.90% probability of exploitation in the next 30 days.

How do I fix CVE-2021-45635?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-45635?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST