CVEvulnerability
CVE-2021-31802
8.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2021-04-26
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 8.8 HIGH — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 8.3 HIGH — AV:A/AC:L/Au:N/C:C/I:C/A:C
- Weaknesses
- CWE-787
Description
NETGEAR R7000 1.0.11.116 devices have a heap-based Buffer Overflow that is exploitable from the local network without authentication. The vulnerability exists within the handling of an HTTP request. An attacker can leverage this to execute code as root. The problem is that a user-provided length value is trusted during a backup.cgi file upload. The attacker must add a \n before the Content-Length header.
Affected configurations
• netgear r7000 firmware (<= 1.0.11.116)
Related
Weakness · CWE (1)
- CWE-787 Out-of-bounds Write weakness
References
- https://ssd-disclosure.com/ssd-advisory-netgear-nighthawk-r7000-httpd-preauth-rce/ Exploit, Third Party Advisory
- https://www.netgear.com/about/security/ Vendor Advisory
- https://ssd-disclosure.com/ssd-advisory-netgear-nighthawk-r7000-httpd-preauth-rce/ Exploit, Third Party Advisory
- https://www.netgear.com/about/security/ Vendor Advisory