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TI-2021-04487 Aliases CVE-2021-21388GHSA-jff2-qjw8-5476

Command Injection Vulnerability in systeminformation

Priority MEDIUM 46CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-78.

Summary

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.

Why it matters now

EPSS 0.01854 79th percentileScored 2026-11-07
Fix Fixed systeminformation (sebhildebrandt): 5.6.4systeminformation (npm): 5.6.4

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
sebhildebrandtsysteminformationbefore 5.6.45.6.4Patch availableCNA
—systeminformation (npm)before 5.6.45.6.4Patch availableGHSA-jff2-qjw8-5476
  • systeminformation Vendorsebhildebrandt Affected before 5.6.4 Fixed in 5.6.4 Patch available CNA
  • systeminformation (npm) Vendor— Affected before 5.6.4 Fixed in 5.6.4 Patch available GHSA-jff2-qjw8-5476

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:systeminformation:systeminformation:*:*:*:*:*:node.js:*:*before 5.6.4Vulnerablesebhildebrandt
  • cpe:2.3:a:systeminformation:systeminformation:*:*:*:*:*:node.js:*:* Versions before 5.6.4 Vulnerable ·sebhildebrandt

Remediation

  • Fix · CNA systeminformation (sebhildebrandt) Fixed in 5.6.4
  • Fix · GHSA-jff2-qjw8-5476 systeminformation (npm) Fixed in 5.6.4 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-21388
  2. 2026-10-03 Alias added: GHSA-jff2-qjw8-5476

References

Patch 3

Advisory 3

  • TI-2021-04415 Command injection in sebhildebrandt systeminformation KEVCVSS 3.1HIGH 7.8
  • TI-2026-37031 systeminformation: OS command injection in networkInterfaces() via interfaces(5) source-directive path on Linux CVSS 4.0HIGH 8.7
  • TI-2023-22901 systeminformation SSID Command Injection Vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2025-41734 Command Injection in fsSize() on Windows CVSS 3.1HIGH 8.1
  • TI-2020-06270 Command injection in systeminformation CVSS 3.1HIGH 8.8
  • TI-2020-16066 Prototype Pollution leading to Command Injection in systeminformation CVSS 3.1CRITICAL 9.8
See all 11 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences