CVE-2021-27273

high-risk
Published 2021-03-29

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.

Do I need to act?

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77.5% chance of exploitation in next 30 days
EPSS score — higher than 22% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Netgear

References (4)

Vendor Advisory https://kb.netgear.com/000062686/Security-Advisory-for-Post-Authentication-Comma...
Third Party Advisory https://www.zerodayinitiative.com/advisories/ZDI-21-356/
Vendor Advisory https://kb.netgear.com/000062686/Security-Advisory-for-Post-Authentication-Comma...
Third Party Advisory https://www.zerodayinitiative.com/advisories/ZDI-21-356/
55
/ 100
high-risk
Severity 30/34 · Critical
Exploitability 20/34 · Moderate
Exposure 5/34 · Minimal