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CVE-2019-20748

MEDIUM
6.8
CVSS Score
Published: April 16, 2020 at 08:58 PM UTC
Updated: June 17, 2026 at 02:31 AM UTC
22 products affected across 1 vendorR7800 FirmwareD7800 FirmwareR7500 Firmware

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Severity
MEDIUM6.8
Exploit prediction
EPSS 0.5%

Description

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects D7800 before 1.0.1.44, R7500v2 before 1.0.3.38, R7800 before 1.0.2.52, RBK20 before 2.3.0.28, RBR20 before 2.3.0.28, RBS20 before 2.3.0.28, RBK40 before 2.3.0.28, RBS40 before 2.3.0.28, RBK50 before 2.3.0.32, RBR50 before 2.3.0.32, and RBS50 before 2.3.0.32.

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)
R7500 Firmware· NETGEAR
95%
v < 1.0.3.38
Affected range stops below 1.0.3.38, so it looks safe — our inference, not a vendor statement
netgear-r7500 (same device)
R7800 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
RBK20 Firmware· NETGEAR
95%
v < 2.3.0.28
Affected range stops below 2.3.0.28, so it looks safe — our inference, not a vendor statement
netgear-rbk20 (same device)
RBK40 Firmware· NETGEAR
95%
v < 2.3.0.28
Affected range stops below 2.3.0.28, so it looks safe — our inference, not a vendor statement
netgear-rbk40 (same device)
RBK50 Firmware· NETGEAR
95%
v < 2.3.0.32
Affected range stops below 2.3.0.32, so it looks safe — our inference, not a vendor statement
netgear-rbk50 (same device)
RBR20 Firmware· NETGEAR
95%
v < 2.3.0.28
Affected range stops below 2.3.0.28, so it looks safe — our inference, not a vendor statement
netgear-rbr20 (same device)
RBR50 Firmware· NETGEAR
95%
v < 2.3.0.32
Affected range stops below 2.3.0.32, so it looks safe — our inference, not a vendor statement
netgear-rbr50 (same device)
RBS20 Firmware· NETGEAR
95%
v < 2.3.0.28
Affected range stops below 2.3.0.28, so it looks safe — our inference, not a vendor statement
netgear-rbs20 (same device)
RBS40 Firmware· NETGEAR
95%
v < 2.3.0.28
Affected range stops below 2.3.0.28, so it looks safe — our inference, not a vendor statement
netgear-rbs40 (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

References (1)

x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://kb.netgear.com/000060963/Security-Advisory-for-Post-Authentication-Stack-Overflow-on-Some-Routers-Gateways-and-WiFi-Systems-PSV-2018-0147

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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