CVE-2019-20734

HIGH

8.8

CVSS Score

Published: April 16, 2020 at 07:12 PM UTC

Updated: June 17, 2026 at 02:31 AM UTC

48 products affected across 1 vendorR6700 FirmwareR7000P FirmwareR7000 Firmware

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Severity

HIGH8.8

Exploit prediction

EPSS 0.5%

Description

Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. This affects D6220 before 1.0.0.40, D8500 before 1.0.3.39, EX3700 before 1.0.0.70, EX3800 before 1.0.0.70, EX6000 before 1.0.0.30, EX6100 before 1.0.2.22, EX6120 before 1.0.0.40, EX6130 before 1.0.0.22, EX6150v1 before 1.0.0.42, EX6200 before 1.0.3.88, EX7000 before 1.0.0.66, R6300v2 before 1.0.4.18, R6400 before 1.0.1.24, R6400v2 before 1.0.2.32, R6700 before 1.0.1.22, R6700v3 before 1.0.2.32, R6900 before 1.0.1.22, R7000 before 1.0.9.6, R6900P before 1.0.0.56, R7000P before 1.0.0.56, R7100LG before 1.0.0.42, R7300DST before 1.0.0.54, R7900 before 1.0.1.26, R8300 before 1.0.2.106, R8500 before 1.0.2.106, WN2500RPv2 before 1.0.1.54, and WNR3500Lv2 before 1.2.0.46. NOTE: this may be a result of an incomplete fix for CVE-2017-18864.

Affected

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

D6220 Firmware · NETGEAR

95%

v < 1.0.0.40

Affected range stops below 1.0.0.40, so it looks safe — our inference, not a vendor statement

netgear-d6220 (same device)

D8500 Firmware · NETGEAR

95%

v < 1.0.3.39

Affected range stops below 1.0.3.39, so it looks safe — our inference, not a vendor statement

netgear-d8500 (same device)

EX3700 Firmware · NETGEAR

95%

v < 1.0.0.70

Affected range stops below 1.0.0.70, so it looks safe — our inference, not a vendor statement

EX3800 Firmware · NETGEAR

95%

v < 1.0.0.70

Affected range stops below 1.0.0.70, so it looks safe — our inference, not a vendor statement

netgear-ex3800 (same device)

EX6000 Firmware · NETGEAR

95%

v < 1.0.0.30

Affected range stops below 1.0.0.30, so it looks safe — our inference, not a vendor statement

netgear-ex6000 (same device)

EX6100 Firmware · NETGEAR

95%

v < 1.0.2.22

Affected range stops below 1.0.2.22, so it looks safe — our inference, not a vendor statement

EX6120 Firmware · NETGEAR

95%

v < 1.0.0.40

Affected range stops below 1.0.0.40, so it looks safe — our inference, not a vendor statement

EX6130 Firmware · NETGEAR

95%

v < 1.0.0.22

Affected range stops below 1.0.0.22, so it looks safe — our inference, not a vendor statement

netgear-ex6130 (same device)

EX6150 Firmware · NETGEAR

95%

v < 1.0.0.42

Affected range stops below 1.0.0.42, so it looks safe — our inference, not a vendor statement

netgear-ex6150 (same device)

EX6200 Firmware · NETGEAR

95%

v < 1.0.3.88

Affected range stops below 1.0.3.88, so it looks safe — our inference, not a vendor statement

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/000061192/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Routers-Gateways-and-Extenders-PSV-2017-0791

References (1)

x_refsource_CONFIRMVendor Advisory

Source: [email protected]

https://kb.netgear.com/000061192/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Routers-Gateways-and-Extenders-PSV-2017-0791

CVSS

8.8HIGH[email protected]

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

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-120

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