CVE-2021-34991

Published Nov 15, 2021 CVSS 3.1 · 8.8 High EPSS 5.7% KEV · Not listed
Description
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6400v2 1.0.4.106_10.0.80 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the UPnP service, which listens on TCP port 5000 by default. When parsing the uuid request header, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-14110.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2021-21638 This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6400v2 1.0.4.106_10.0.80 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the UPnP service, which listens on TCP port 5000 by default. When parsing the uuid request header, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-14110.
History

No history.

Subscriptions

Netgear Cax80 Cax80 Firmware D6220 D6220 Firmware D6400 D6400 Firmware D7000v2 D7000v2 Firmware Dc112a Dc112a Firmware Dgn2200v4 Dgn2200v4 Firmware Ex3700 Ex3700 Firmware Ex3800 Ex3800 Firmware Ex6120 Ex6120 Firmware Ex6130 Ex6130 Firmware R6400 R6400 Firmware R6400v2 R6400v2 Firmware R6700v3 R6700v3 Firmware R6900p R6900p Firmware R7000 R7000 Firmware R7000p R7000p Firmware R7100lg R7100lg Firmware R7850 R7850 Firmware R7900p R7900p Firmware R7960p R7960p Firmware R8000 R8000 Firmware R8000p R8000p Firmware R8300 R8300 Firmware R8500 R8500 Firmware Rax15 Rax15 Firmware Rax20 Rax200 Rax200 Firmware Rax20 Firmware Rax35v2 Rax35v2 Firmware Rax38v2 Rax38v2 Firmware Rax40v2 Rax40v2 Firmware Rax42 Rax42 Firmware Rax43 Rax43 Firmware Rax45 Rax45 Firmware Rax48 Rax48 Firmware Rax50 Rax50 Firmware Rax50s Rax50s Firmware Rax75 Rax75 Firmware Rax80 Rax80 Firmware Raxe450 Raxe450 Firmware Raxe500 Raxe500 Firmware Rs400 Rs400 Firmware Wndr3400v3 Wndr3400v3 Firmware Wnr3500lv2 Wnr3500lv2 Firmware Xr300 Xr300 Firmware
Weaknesses

Sources

Status
PUBLISHED
Assigner
zdi
Published
Updated
Aug 4, 2024, 12:26 AM
Reserved
Jun 17, 2021, 12:00 AM
Status
Modified
Published
Nov 15, 2021, 4:15 PM
Modified
Jun 17, 2026, 3:56 AM