high
8.8
CWE
798 259
Advisory Published
Updated
Advisory Published

CVE-2021-27254: (Pwn2Own) NETGEAR Nighthawk R7800 Use of Hard-coded Password Authentication Bypass Vulnerability

First published: Fri Mar 05 2021(Updated: )

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R7800. Authentication is not required to exploit this vulnerability. The specific flaw exists within the apply_save.cgi endpoint. This issue results from the use of hard-coded encryption key. An attacker can leverage this vulnerability to execute arbitrary code in the context of root.

Credit: zdi-disclosures@trendmicro.com

Affected SoftwareAffected VersionHow to fix
NETGEAR R7800<5.10.0.5
Netgear Br200
NETGEAR R7800<5.10.0.5
Netgear Br500
Netgear D7800 Firmware<1.0.1.60
Netgear D7800
Netgear Ex6100v2 Firmware<1.0.1.98
Netgear Ex6100v2
Netgear Ex6150v2 Firmware<1.0.1.98
Netgear Ex6150v2
Netgear Ex6250 Firmware<1.0.0.134
Netgear Ex6250
Netgear Ex6400 Firmware<1.0.2.158
Netgear Ex6400
Netgear Ex6400v2 Firmware<1.0.0.134
Netgear Ex6400v2
Netgear Ex6410 Firmware<1.0.0.134
Netgear Ex6410
Netgear Ex6420 Firmware<1.0.0.134
Netgear Ex6420
Netgear Ex7300 Firmware<1.0.2.158
Netgear Ex7300
Netgear Ex7300v2 Firmware<1.0.0.134
Netgear Ex7300v2
Netgear Ex7320 Firmware<1.0.0.134
Netgear Ex7320
Netgear Ex7700 Firmware<1.0.0.216
NETGEAR EX7700
NETGEAR R7800<1.0.1.232
Netgear Ex8000
Netgear Lbr20 Firmware<2.6.3.50
Netgear Lbr20
NETGEAR R7800 firmware<1.0.2.80
NETGEAR R7800
Netgear R8900 Firmware<1.0.5.28
NETGEAR R8900
Netgear R9000 Firmware<1.0.5.28
NETGEAR R9000
Netgear Rbk12 Firmware<2.7.2.104
Netgear Rbk12
Netgear Rbk13 Firmware<2.7.2.104
Netgear Rbk13
NETGEAR R7800<2.7.2.104
NETGEAR R7800
NETGEAR R7800<2.7.2.104
Netgear Rbk15
Netgear Rbk20 Firmware<2.6.2.104
Netgear Rbk20
Netgear Rbk23 Firmware<2.7.2.104
Netgear Rbk23
Netgear Rbk40 Firmware<2.6.2.104
Netgear Rbk40
NETGEAR R7800<2.6.2.104
NETGEAR R7800
Netgear Rbk43s Firmware<2.6.2.104
NETGEAR R7800
Netgear Rbk44 Firmware<2.6.2.104
NETGEAR R7800
Netgear Rbk50 Firmware<2.7.2.104
Netgear Rbk50
NETGEAR R7800<2.7.2.104
Netgear Rbk53
Netgear Rbr10 Firmware<2.6.2.104
Netgear Rbr10
Netgear Rbr20 Firmware<2.6.2.104
Netgear Rbr20
Netgear Rbr40 Firmware<2.6.2.104
Netgear Rbr40
Netgear Rbr50 Firmware<2.7.2.104
Netgear Rbr50
Netgear Rbs10 Firmware<2.6.2.104
Netgear Rbs10
Netgear Rbs20 Firmware<2.6.2.104
Netgear Rbs20
Netgear Rbs40 Firmware<2.6.2.104
Netgear Rbs40
Netgear Rbs50 Firmware<2.7.2.104
Netgear Rbs50
Netgear Rbs50y Firmware<2.6.2.104
Netgear Rbs50y
NETGEAR R7800<2.3.2.114
NETGEAR R7800
Netgear Xr500 Firmware<2.3.2.114
NETGEAR XR500
Netgear Xr700 Firmware<1.0.1.38
Netgear Xr700

Remedy

https://kb.netgear.com/000062883/Security-Advisory-for-Multiple-Vulnerabilities-on-Some-Routers-Satellites-and-Extenders

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