VULNERABILITY INTELLIGENCE

CVE-2021-27251

CVSS score8.8 HIGH
EPSS probability0.73%
CISA KEVNot currently listed
Published2021-04-14
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR Nighthawk R7800. Authentication is not required to exploit this vulnerability The specific flaw exists within handling of firmware updates. The issue results from a fallback to a insecure protocol to deliver updates. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-12308.

Weakness classification

  • zdi-disclosures@trendmicro.com: CWE-319

Primary references