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    CVE-2021-34947

    NETGEAR R7800 net-cgi Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R7800 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the parsing of the soap_block_table file. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated data structure. An attacker can leverage this vulnerability to execute code in the context of root. . Was ZDI-CAN-13055.

    Published:May 7, 2024
    Last Modified:Aug 14, 2025
    EPS:May 7, 2024
    EPSS Score:0.00286
    CVSS Score:8.8

    Affected Products

    Vendor
    Netgear
    Product
    D7800
    Vendor
    Netgear
    Product
    D7800 Firmware
    Vendor
    Netgear
    Product
    Ex2700
    Vendor
    Netgear
    Product
    Ex2700 Firmware
    Vendor
    Netgear
    Product
    Ex6100
    Vendor
    Netgear
    Product
    Ex6100 Firmware
    Vendor
    Netgear
    Product
    Ex6150
    Vendor
    Netgear
    Product
    Ex6150 Firmware
    Vendor
    Netgear
    Product
    Ex6200
    Vendor
    Netgear
    Product
    Ex6200 Firmware
    Vendor
    Netgear
    Product
    Ex6250
    Vendor
    Netgear
    Product
    Ex6250 Firmware
    Vendor
    Netgear
    Product
    Ex6400
    Vendor
    Netgear
    Product
    Ex6400 Firmware
    Vendor
    Netgear
    Product
    Ex6400v2
    Vendor
    Netgear
    Product
    Ex6400v2 Firmware
    Vendor
    Netgear
    Product
    Ex6410
    Vendor
    Netgear
    Product
    Ex6410 Firmware
    Vendor
    Netgear
    Product
    Ex6420
    Vendor
    Netgear
    Product
    Ex6420 Firmware
    Vendor
    Netgear
    Product
    Ex6500v1
    Vendor
    Netgear
    Product
    Ex6500v1 Firmware
    Vendor
    Netgear
    Product
    Ex7300
    Vendor
    Netgear
    Product
    Ex7300 Firmware
    Vendor
    Netgear
    Product
    Ex7300v2
    Vendor
    Netgear
    Product
    Ex7300v2 Firmware
    Vendor
    Netgear
    Product
    Ex7320
    Vendor
    Netgear
    Product
    Ex7320 Firmware
    Vendor
    Netgear
    Product
    Ex7700
    Vendor
    Netgear
    Product
    Ex7700 Firmware
    Vendor
    Netgear
    Product
    Ex8000
    Vendor
    Netgear
    Product
    Ex8000 Firmware
    Vendor
    Netgear
    Product
    Lbr1020
    Vendor
    Netgear
    Product
    Lbr1020 Firmware
    Vendor
    Netgear
    Product
    Lbr20
    Vendor
    Netgear
    Product
    Lbr20 Firmware
    Vendor
    Netgear
    Product
    R6700ax
    Vendor
    Netgear
    Product
    R6700ax Firmware
    Vendor
    Netgear
    Product
    R7800
    Vendor
    Netgear
    Product
    R7800 Firmware
    Vendor
    Netgear
    Product
    R8900
    Vendor
    Netgear
    Product
    R8900 Firmware
    Vendor
    Netgear
    Product
    R9000
    Vendor
    Netgear
    Product
    R9000 Firmware
    Vendor
    Netgear
    Product
    Rax10
    Vendor
    Netgear
    Product
    Rax10 Firmware
    Vendor
    Netgear
    Product
    Rax120
    Vendor
    Netgear
    Product
    Rax120 Firmware
    Vendor
    Netgear
    Product
    Rax120v2
    Vendor
    Netgear
    Product
    Rax120v2 Firmware
    Vendor
    Netgear
    Product
    Rax70
    Vendor
    Netgear
    Product
    Rax70 Firmware
    Vendor
    Netgear
    Product
    Rax78
    Vendor
    Netgear
    Product
    Rax78 Firmware
    Vendor
    Netgear
    Product
    Rbr10
    Vendor
    Netgear
    Product
    Rbr10 Firmware
    Vendor
    Netgear
    Product
    Rbr20
    Vendor
    Netgear
    Product
    Rbr20 Firmware
    Vendor
    Netgear
    Product
    Rbr40
    Vendor
    Netgear
    Product
    Rbr40 Firmware
    Vendor
    Netgear
    Product
    Rbr50
    Vendor
    Netgear
    Product
    Rbr50 Firmware
    Vendor
    Netgear
    Product
    Rbs10
    Vendor
    Netgear
    Product
    Rbs10 Firmware
    Vendor
    Netgear
    Product
    Rbs20
    Vendor
    Netgear
    Product
    Rbs20 Firmware
    Vendor
    Netgear
    Product
    Rbs40
    Vendor
    Netgear
    Product
    Rbs40 Firmware
    Vendor
    Netgear
    Product
    Rbs50
    Vendor
    Netgear
    Product
    Rbs50 Firmware
    Vendor
    Netgear
    Product
    Rbs50y
    Vendor
    Netgear
    Product
    Rbs50y Firmware
    Vendor
    Netgear
    Product
    Wn3000rpv2
    Vendor
    Netgear
    Product
    Wn3000rpv2 Firmware
    Vendor
    Netgear
    Product
    Wnr2000v5
    Vendor
    Netgear
    Product
    Wnr2000v5 Firmware
    Vendor
    Netgear
    Product
    Xr450
    Vendor
    Netgear
    Product
    Xr450 Firmware
    Vendor
    Netgear
    Product
    Xr500
    Vendor
    Netgear
    Product
    Xr500 Firmware
    Vendor
    Netgear
    Product
    Xr700
    Vendor
    Netgear
    Product
    Xr700 Firmware

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High