What’s Vulnerable › Vulnerabilities

CVE-2021-45504

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-12-26 · updated 2026-06-17

Description

Certain NETGEAR devices are affected by authentication bypass. This affects CBR40 before 2.5.0.24, CBR750 before 4.6.3.6, RBR852 before 3.2.17.12, RBR850 before 3.2.17.12, and RBS850 before 3.2.17.12.

Affected products

• NETGEAR Cbr40 Firmware: before 2.5.0.24 — fixed in 2.5.0.24
• NETGEAR Cbr750 Firmware: before 4.6.3.6 — fixed in 4.6.3.6
• NETGEAR Rbr850 Firmware: before 3.2.17.12 — fixed in 3.2.17.12
• NETGEAR Rbr852 Firmware: before 3.2.17.12 — fixed in 3.2.17.12
• NETGEAR Rbs850 Firmware: before 3.2.17.12 — fixed in 3.2.17.12

How to fix

Upgrade to a fixed version: NETGEAR Cbr40 Firmware 2.5.0.24; NETGEAR Cbr750 Firmware 4.6.3.6; NETGEAR Rbr850 Firmware 3.2.17.12; NETGEAR Rbr852 Firmware 3.2.17.12; NETGEAR Rbs850 Firmware 3.2.17.12. Check the vendor advisory for mitigations.

References

• https://kb.netgear.com/000064128/Security-Advisory-for-Authentication-Bypass-on-Some-WiFi-Systems-PSV-2020-0475
• https://kb.netgear.com/000064128/Security-Advisory-for-Authentication-Bypass-on-Some-WiFi-Systems-PSV-2020-0475

Get alerted when CVE-2021-45504 or the next vulnerability affects your stack