CVE-2021-27274

Name: CVE-2021-27274
Creator: NVD / NIST
Published: 2021-03-29T21:15:13.187+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 8.17%

Last modified Jun 17, 2026

CVE-2021-27274 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 8.17% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

8.17%

94.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-434

Affected Software

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

Timeline

Published: Mar 29, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-27274?

How severe is CVE-2021-27274?

CVE-2021-27274 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 8.17% probability of exploitation in the next 30 days.

How do I fix CVE-2021-27274?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-27274?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST