CVE-2021-27274 - CVE House
Back to Database
Status published Critical CVE-2021-27274

This vulnerability allows remote attackers to execute arbitrary code on...

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-27274

Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • rgod

References

More from NETGEAR

View All →
CVE-2025-25246
NETGEAR XR1000 before 1.0.0.74, XR1000v2 before 1.1.0.22, and XR500 before...
High 8.1
CVE-2025-12946
Improper input validation in NETGEAR Nighthawk routers
Medium 4.4
CVE-2025-12945
Improper input validation in NETGEAR Nighthawk router R7000P
Low 1.1
CVE-2025-12944
Improper input validation in NETGEAR DGN2200v4
Medium 6.8
CVE-2025-12943
Improper certificate validation in firmware update logic in NETGEAR RAX30 and RAXE300
Medium 5.2

Affected Vendor

Affected Software

ProSAFE Network Management System
Vulnerable Versions:
1.6.0.26

Timeline

Official Publish: March 29th, 2021
Last Modified: August 3rd, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-434

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1505.003 Web Shell
Persistence
T1105 Ingress Tool Transfer
Command and Control
T1059 Command and Scripting Interpreter
Execution
T1565.002 Stored Data Manipulation
Impact