CVE-2021-27254

HighCVSS 8.8/10Last modified Jun 17, 2026

Description

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R7800. Authentication is not required to exploit this vulnerability. The specific flaw exists within the apply_save.cgi endpoint. This issue results from the use of hard-coded encryption key. An attacker can leverage this vulnerability to execute arbitrary code in the context of root. Was ZDI-CAN-12287.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-259CWE-798

Affected software

VendorProductVersions
NETGEARR7800firmware version 1.0.2.76

References

Timeline

Published
Mar 5, 2021
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-27254: High severity, CVSS 8.8 | Vulnix