What’s Vulnerable › Vulnerabilities

CVE-2021-45659

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-12-26 · updated 2026-06-17
• Weakness: CWE-74

Description

Certain NETGEAR devices are affected by server-side injection. This affects RBK40 before 2.5.1.16, RBR40 before 2.5.1.16, RBS40 before 2.5.1.16, RBK20 before 2.5.1.16, RBR20 before 2.5.1.16, RBS20 before 2.5.1.16, RBK50 before 2.5.1.16, RBR50 before 2.5.1.16, RBS50 before 2.5.1.16, and RBS50Y before 2.6.1.40.

Affected products

• NETGEAR Rbk20 Firmware: before 2.5.1.16 — fixed in 2.5.1.16
• NETGEAR Rbk40 Firmware: before 2.5.1.16 — fixed in 2.5.1.16
• NETGEAR Rbk50 Firmware: before 2.5.1.16 — fixed in 2.5.1.16
• NETGEAR Rbr20 Firmware: before 2.5.1.16 — fixed in 2.5.1.16
• NETGEAR Rbr40 Firmware: before 2.5.1.16 — fixed in 2.5.1.16
• NETGEAR Rbr50 Firmware: before 2.5.1.16 — fixed in 2.5.1.16
• NETGEAR Rbs20 Firmware: before 2.5.1.16 — fixed in 2.5.1.16
• NETGEAR Rbs40 Firmware: before 2.5.1.16 — fixed in 2.5.1.16
• NETGEAR Rbs50 Firmware: before 2.5.1.16 — fixed in 2.5.1.16
• NETGEAR Rbs50Y Firmware: before 2.6.1.40 — fixed in 2.6.1.40

How to fix

Upgrade to a fixed version: NETGEAR Rbk20 Firmware 2.5.1.16; NETGEAR Rbk40 Firmware 2.5.1.16; NETGEAR Rbk50 Firmware 2.5.1.16; NETGEAR Rbr20 Firmware 2.5.1.16; NETGEAR Rbr40 Firmware 2.5.1.16; NETGEAR Rbr50 Firmware 2.5.1.16; NETGEAR Rbs20 Firmware 2.5.1.16; NETGEAR Rbs40 Firmware 2.5.1.16; NETGEAR Rbs50 Firmware 2.5.1.16; NETGEAR Rbs50Y Firmware 2.6.1.40. Check the vendor advisory for mitigations.

References

• https://kb.netgear.com/000064063/Security-Advisory-for-Server-Side-Injection-on-Some-WiFi-Systems-PSV-2019-0126
• https://kb.netgear.com/000064063/Security-Advisory-for-Server-Side-Injection-on-Some-WiFi-Systems-PSV-2019-0126

Get alerted when CVE-2021-45659 or the next vulnerability affects your stack