CVE-2018-21188

MEDIUM

6.8

CVSS Score

Published: April 28, 2020 at 02:56 PM UTC

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

16 products affected across 1 vendorR7800 FirmwareR9000 FirmwareD7800 Firmware

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Severity

MEDIUM6.8

Exploit prediction

EPSS 0.6%

Description

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects D7800 before 1.0.1.30, R7500v2 before 1.0.3.24, R7800 before 1.0.2.40, R9000 before 1.0.2.52, WNDR3700v4 before 1.0.2.92, WNDR4300 before 1.0.2.94, WNDR4300v2 before 1.0.0.50, WNDR4500v3 before 1.0.0.50, and WNR2000v5 before 1.0.0.62.

Affected

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

D7800 Firmware · NETGEAR

95%

v < 1.0.1.30

Affected range stops below 1.0.1.30, so it looks safe — our inference, not a vendor statement

netgear-d7800 (same device)

R7500 Firmware · NETGEAR

95%

v < 1.0.3.24

Affected range stops below 1.0.3.24, so it looks safe — our inference, not a vendor statement

netgear-r7500 (same device)

R7800 Firmware · NETGEAR

95%

v < 1.0.2.40

Affected range stops below 1.0.2.40, so it looks safe — our inference, not a vendor statement

R9000 Firmware · NETGEAR

95%

v < 1.0.2.52

Affected range stops below 1.0.2.52, so it looks safe — our inference, not a vendor statement

netgear-r9000 (same device)

WNDR3700 Firmware · NETGEAR

95%

v < 1.0.2.92

Affected range stops below 1.0.2.92, so it looks safe — our inference, not a vendor statement

netgear-wndr3700 (same device)

WNDR4300 Firmware · NETGEAR

95%

v < 1.0.0.50v < 1.0.2.94

Affected range stops below 1.0.0.50, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.0.2.94, so it looks safe — our inference, not a vendor statement

netgear-wndr4300 (same device)

WNDR4500 Firmware · NETGEAR

95%

v < 1.0.0.50

Affected range stops below 1.0.0.50, so it looks safe — our inference, not a vendor statement

netgear-wndr4500 (same device)

WNR2000 Firmware · NETGEAR

95%

v < 1.0.0.62

Affected range stops below 1.0.0.62, so it looks safe — our inference, not a vendor statement

netgear-wnr2000 (same device)

D7800 · NETGEARdevice

80%

All versions

R7500 · NETGEARdevice

80%

All versions

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/000055169/Security-Advisory-for-Post-Authentication-Stack-Overflow-on-Some-Routers-and-Gateways-PSV-2017-2607

References (1)

x_refsource_CONFIRMVendor Advisory

Source: [email protected]

https://kb.netgear.com/000055169/Security-Advisory-for-Post-Authentication-Stack-Overflow-on-Some-Routers-and-Gateways-PSV-2017-2607

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-787

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