CVE-2018-21114

MEDIUM

6.8

CVSS Score

Published: April 22, 2020 at 02:43 PM UTC

Updated: June 17, 2026 at 01:54 AM UTC

26 products affected across 1 vendorR7800 FirmwareR9000 FirmwareD7800 Firmware

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Severity

MEDIUM6.8

Exploit prediction

EPSS 0.9%

Description

Certain NETGEAR devices are affected by command injection by an authenticated user. This affects D7800 before 1.0.1.44, EX6150v2 before 1.0.1.70, EX6100v2 before 1.0.1.70, EX6200v2 before 1.0.1.64, EX7300 before 1.0.2.136, EX6400 before 1.0.2.136, R6100 before 1.0.1.16, R7500 before 1.0.0.110, R7800 before 1.0.2.32, R9000 before 1.0.4.12, WN3000RPv2 before 1.0.0.56, WN3000RPv3 before 1.0.2.52, WNDR4300v2 before 1.0.0.50, and WNDR4500v3 before 1.0.0.50.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

D7800 Firmware · NETGEAR

95%

v < 1.0.1.44

Affected range stops below 1.0.1.44, so it looks safe — our inference, not a vendor statement

netgear-d7800 (same device)

EX6100 Firmware · NETGEAR

95%

v < 1.0.1.70

Affected range stops below 1.0.1.70, so it looks safe — our inference, not a vendor statement

EX6150 Firmware · NETGEAR

95%

v < 1.0.1.70

Affected range stops below 1.0.1.70, so it looks safe — our inference, not a vendor statement

netgear-ex6150 (same device)

EX6200 Firmware · NETGEAR

95%

v < 1.0.1.64

Affected range stops below 1.0.1.64, so it looks safe — our inference, not a vendor statement

EX6400 Firmware · NETGEAR

95%

v < 1.0.2.136

Affected range stops below 1.0.2.136, so it looks safe — our inference, not a vendor statement

netgear-ex6400 (same device)

EX7300 Firmware · NETGEAR

95%

v < 1.0.2.136

Affected range stops below 1.0.2.136, so it looks safe — our inference, not a vendor statement

netgear-ex7300 (same device)

R6100 Firmware · NETGEAR

95%

v < 1.0.1.16

Affected range stops below 1.0.1.16, so it looks safe — our inference, not a vendor statement

netgear-r6100 (same device)

R7500 Firmware · NETGEAR

95%

v < 1.0.0.110

Affected range stops below 1.0.0.110, so it looks safe — our inference, not a vendor statement

netgear-r7500 (same device)

R7800 Firmware · NETGEAR

95%

v < 1.0.2.32

Affected range stops below 1.0.2.32, so it looks safe — our inference, not a vendor statement

R9000 Firmware · NETGEAR

95%

v < 1.0.4.12

Affected range stops below 1.0.4.12, so it looks safe — our inference, not a vendor statement

netgear-r9000 (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://kb.netgear.com/000060437/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Routers-Modem-Routers-and-Wireless-Extenders-PSV-2017-0645

References (1)

x_refsource_CONFIRMVendor Advisory

Source: [email protected]

https://kb.netgear.com/000060437/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Routers-Modem-Routers-and-Wireless-Extenders-PSV-2017-0645

CVSS

6.8MEDIUM[email protected]

Attack Vector: ADJACENT_NETWORK
Complexity: LOW
Privileges: HIGH
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-74

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