What’s Vulnerable › Vulnerabilities

CVE-2021-27274

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 8.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-03-29 · updated 2026-06-17
• Weakness: CWE-434

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.

Affected products

• NETGEAR ProSAFE Network Management System: 1.6.0.26

References

• https://kb.netgear.com/000062688/Security-Advisory-for-Pre-Authentication-Command-Injection-on-NMS300-PSV-2020-0560
• https://www.zerodayinitiative.com/advisories/ZDI-21-357/
• https://kb.netgear.com/000062688/Security-Advisory-for-Pre-Authentication-Command-Injection-on-NMS300-PSV-2020-0560
• https://www.zerodayinitiative.com/advisories/ZDI-21-357/

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