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Vulnerability record · CVE-2021-27274 · published 29 March 2021

CVE-2021-27274: Netgear prosafe network management system unrestricted file upload vulnerability

Netgear · Prosafe Network Management System

This vulnerability allows remote attackers to execute arbitrary code on affected installations of NETGEAR ProSAFE Network Management System 1.6.0.26. Authentication is not required to exploit this vulnerability. The specific flaw exists within the MFileUploadController class. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. Was ZDI-CAN-12124.

9.8 CVSS 3.1 Critical EPSS 8.2% · top 5.3% CWE-434 · Unrestricted file upload
9.8CVSS 3.1 base score, v2 10.0
8.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

This vulnerability allows remote attackers to execute arbitrary code on affected installations of NETGEAR ProSAFE Network Management System 1.6.0.26. Authentication is not required to exploit this vulnerability. The specific flaw exists within the MFileUploadController class. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. Was ZDI-CAN-12124.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://kb.netgear.com/000062688/Security-Advisory-for-Pre-Authentication-Command-Injection-on-NMS300-PSV-2020-0560 Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-357/ Third Party AdvisoryVDB Entry
https://kb.netgear.com/000062688/Security-Advisory-for-Pre-Authentication-Command-Injection-on-NMS300-PSV-2020-0560 Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-357/ Third Party AdvisoryVDB Entry

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-27274), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.