What’s Vulnerable › Vulnerabilities

CVE-2018-21154

• Severity: medium (CVSS 6.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-04-27 · updated 2026-06-17
• Weakness: CWE-78

Description

Certain NETGEAR devices are affected by command injection by an authenticated user. This affects D7800 before 1.0.1.34, DM200 before 1.0.0.50, R6100 before 1.0.1.22, R7500 before 1.0.0.122, R7500v2 before 1.0.3.26, and R7800 before 1.0.2.42.

Affected products

• NETGEAR D7800 Firmware: before 1.0.1.34 — fixed in 1.0.1.34
• NETGEAR Dm200 Firmware: before 1.0.0.50 — fixed in 1.0.0.50
• NETGEAR R6100 Firmware: before 1.0.1.22 — fixed in 1.0.1.22
• NETGEAR R7500 Firmware: before 1.0.0.122; before 1.0.3.26 — fixed in 1.0.0.122, 1.0.3.26
• NETGEAR R7800 Firmware: before 1.0.2.42 — fixed in 1.0.2.42

How to fix

Upgrade to a fixed version: NETGEAR D7800 Firmware 1.0.1.34; NETGEAR Dm200 Firmware 1.0.0.50; NETGEAR R6100 Firmware 1.0.1.22; NETGEAR R7500 Firmware 1.0.0.122, 1.0.3.26; NETGEAR R7800 Firmware 1.0.2.42. Check the vendor advisory for mitigations.

References

• https://kb.netgear.com/000059479/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Gateways-and-Routers-PSV-2017-3133
• https://kb.netgear.com/000059479/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Gateways-and-Routers-PSV-2017-3133

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