CVE-2021-21388

Command Injection Vulnerability in systeminformation

CRITICAL
9.8
CVSS Score
Published: April 29, 2021 at 05:20 PM UTC
Updated: June 17, 2026 at 03:35 AM UTC
2 products affected across 2 vendorsSysteminformationSysteminformation

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Severity
CRITICAL9.8
Exploit prediction
EPSS 2%

Description

systeminformation is an open source system and OS information library for node.js. A command injection vulnerability has been discovered in versions of systeminformation prior to 5.6.4. The issue has been fixed with a parameter check on user input. Please upgrade to version >= 5.6.4. If you cannot upgrade, be sure to check or sanitize service parameters that are passed to si.inetLatency(), si.inetChecksite(), si.services(), si.processLoad() and other commands. Only allow strings, reject any arrays. String sanitation works as expected.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 5.6.4
Affected range stops below 5.6.4, so it looks safe — our inference, not a vendor statement
v < 5.6.4
Affected range stops below 5.6.4, so it looks safe — our inference, not a vendor statement

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20CWE-78

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