CVE-2021-34978

HIGH

NETGEAR R6260 1.1.0.78_1.0.1 - Unauthenticated Stack-based Buffer Overflow via setupwizard.cgi SOAP Request

Title source: llm

Description

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. A crafted SOAP request can trigger an overflow of a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-13511.

References (2)

Core 2

Core References

Third Party Advisory, VDB Entry x_refsource_misc

https://www.zerodayinitiative.com/advisories/ZDI-21-1240/

Vendor Advisory x_refsource_misc

https://kb.netgear.com/000064258/Security-Advisory-for-Vertical-Privilege-Escalation-on-Some-Routers-DSL-Modem-Routers-and-Access-Points-PSV-2021-0151-and-PSV-2021-0170?article=000064258

Scores

CVSS v3 8.8

EPSS 0.0019

EPSS Percentile 40.1%

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