CVE-2021-27276

This vulnerability allows remote attackers to delete arbitrary files on affected installations of NETGEAR ProSAFE Network Management System 1.6.0.26. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the MibController class. When parsing the realName parameter, the process does not properly validate a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-12122.

• CWE-22

• https://kb.netgear.com/000062722/Security-Advisory-for-Denial-of-Service-on-NMS300-PSV-2020-0500Vendor Advisory
• https://www.zerodayinitiative.com/advisories/ZDI-21-359/Third Party Advisory, VDB Entry
• https://kb.netgear.com/000062722/Security-Advisory-for-Denial-of-Service-on-NMS300-PSV-2020-0500Vendor Advisory
• https://www.zerodayinitiative.com/advisories/ZDI-21-359/Third Party Advisory, VDB Entry

Published

Mar 29, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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