What’s Vulnerable › Vulnerabilities

CVE-2021-27273

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 66.0% 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-78

Description

This vulnerability allows remote attackers to execute arbitrary code 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 SettingConfigController class. When parsing the fileName parameter, the process does not properly validate a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. Was ZDI-CAN-12121.

Affected products

• NETGEAR ProSAFE Network Management System: 1.6.0.26

References

• https://kb.netgear.com/000062686/Security-Advisory-for-Post-Authentication-Command-Injection-on-NMS300-PSV-2020-0559
• https://www.zerodayinitiative.com/advisories/ZDI-21-356/
• https://kb.netgear.com/000062686/Security-Advisory-for-Post-Authentication-Command-Injection-on-NMS300-PSV-2020-0559
• https://www.zerodayinitiative.com/advisories/ZDI-21-356/

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