Description
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R7800 firmware version 1.0.2.76. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the handling of the rc_service parameter provided to apply_save.cgi. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-12355.
References (2)
Core 2
Core References
Patch, Vendor Advisory x_refsource_misc
https://kb.netgear.com/000062883/Security-Advisory-for-Multiple-Vulnerabilities-on-Some-Routers-Satellites-and-Extenders
Third Party Advisory, VDB Entry x_refsource_misc
https://www.zerodayinitiative.com/advisories/ZDI-21-262/
Scores
CVSS v3
8.8
EPSS
0.0056
EPSS Percentile
68.4%
Attack Vector
ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-78
Status
published
Products (43)
netgear/br200_firmware
< 5.10.0.5
netgear/br500_firmware
< 5.10.0.5
netgear/d7800_firmware
< 1.0.1.60
netgear/ex6100v2_firmware
< 1.0.1.98
netgear/ex6150v2_firmware
< 1.0.1.98
netgear/ex6250_firmware
< 1.0.0.134
netgear/ex6400_firmware
< 1.0.2.158
netgear/ex6400v2_firmware
< 1.0.0.134
netgear/ex6410_firmware
< 1.0.0.134
netgear/ex6420_firmware
< 1.0.0.134
... and 33 more
Published
Mar 05, 2021
Tracked Since
Feb 18, 2026