Buffer overflow in NETGEAR R6260
CVE-2021-34979
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 handling of SOAP requests. When parsing the SOAPAction header, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-13512.
Vulnerability class: Buffer Overflow
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.014 (70.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 70.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000
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
- www.zerodayinitiative.com/advisories/ZDI-21-1241/ (VDB Entry, Third Party Advisory)
- kb.netgear.com/000064261/Security-Advisory-for-Vertical-Privilege-Escalation-on… (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-34979?
- CVE-2021-34979 is a high-severity vulnerability in NETGEAR R6260, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2022-01-13.
- How severe is CVE-2021-34979?
- High severity. CVSS v3 base score is 8.8 out of 10.