CVE-2021-34980
HIGHNETGEAR R6260 1.1.0.78_1.0.1 - Unauthenticated Stack-based Buffer Overflow via SOAP_LOGIN_TOKEN
Title source: llmDescription
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6260 1.1.0.78_1.0.1 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the setupwizard.cgi page. When parsing the SOAP_LOGIN_TOKEN environment variable, 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-14107.
References (2)
Core 2
Core References
Third Party Advisory, VDB Entry x_refsource_misc
https://www.zerodayinitiative.com/advisories/ZDI-21-1242/
Vendor Advisory x_refsource_misc
https://kb.netgear.com/000064262/Security-Advisory-for-Vertical-Privilege-Escalation-on-Some-Routers-PSV-2021-0150?article=000064262
Scores
CVSS v3
8.8
EPSS
0.0022
EPSS Percentile
45.0%
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-121
CWE-787
Status
published
Products (1)
netgear/r6260_firmware
1.1.0.78_1.0.1
Published
Jan 13, 2022
Tracked Since
Feb 18, 2026