CVE-2021-31802

HIGH

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.

CVSS v3 vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected routers (1)

Vendor	Model	Matched via	Affected versions	Fixed in	Patch?
Netgear	Netgear Nighthawk R7000	—	—	—	No

External references

• NIST NVD
• MITRE CVE