Buffer overflow in NETGEAR R6260
CVE-2021-34980
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.
Vulnerability class: Buffer Overflow
EPSS: 0.014 (69.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Netgear R6260 — versions 1.1.0.78_1.0.1
- Netgear R6260_firmware — versions 1.1.0.78_1.0.1
Weakness classification (CWE)
References
- zdi-disclosures@trendmicro.com (VDB Entry, Third Party Advisory, x_refsource_MISC)
- zdi-disclosures@trendmicro.com (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-34980?
- CVE-2021-34980 is a high-severity vulnerability in NETGEAR R6260, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2022-01-13.
- How severe is CVE-2021-34980?
- High severity. CVSS v3 base score is 8.8 out of 10.