CVE-2021-27273Network attack vector

Authenticated SYSTEM code execution via unsanitized filename

Published Mar 29, 2021 · Updated Aug 3, 2024

Command injection in NETGEAR ProSAFE Network Management System 1.6.0.26 allows remote authenticated users to execute code as SYSTEM. SettingConfigController passes the user-controlled fileName parameter to a system call without properly validating command content. Access to the affected interface is required, but the existing authentication mechanism can be bypassed, yielding full SYSTEM-context execution.

CVSS severity8.8
High
EPSS probability65.00%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in NETGEAR ProSAFE Network Management System 1.6.0.26 allows remote authenticated users to execute code as SYSTEM. SettingConfigController passes the user-controlled fileName parameter to a system call without properly validating command content. Access to the affected interface is required, but the existing authentication mechanism can be bypassed, yielding full SYSTEM-context execution.

The record

CVE
CVE-2021-27273
Published
Mar 29, 2021
Updated
Aug 3, 2024
Vendor
NETGEAR
Product
ProSAFE Network Management System NMS300
Classifications
CWE-78, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 29, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.6.0.26

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

NETGEAR · ProSAFE Network Management System NMS300version=1.6.0.26

Published CVSS scores

8.8NETGEARCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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