CVE-2021-21388: high-severity vulnerability in sebhildebrandt systeminformation
Command Injection Vulnerability in systeminformation
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.9epss 1.9%
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:H
Affected products
sebhildebrandt · systeminformationRelated CVEs — sebhildebrandt systeminformation
In the same product, most dangerous first.
CVE-2021-21315HIGHCommand Injection VulnerabilityEPSS 90.7%KEVCVE-2025-68154HIGHCommand Injection in fsSize() on WindowsEPSS 13.0%CVE-2020-26274MEDIUMCommand Injection Vulnerability in systeminformationEPSS 2.7%CVE-2020-26245HIGHPrototype Pollution leading to Command Injection in systeminformationEPSS 2.2%CVE-2023-42810CRITICALsysteminformation SSID Command Injection VulnerabilityEPSS 2.2%CVE-2026-50289HIGHsysteminformation: OS command injection in networkInterfaces() via interfaces(5) source-directive path on LinuxEPSS 2.2%
References
https://github.com/sebhildebrandt/systeminformation/commit/01ef56cd5824ed6da1c11b37013a027fdef67524https://github.com/sebhildebrandt/systeminformation/commit/0be6fcd575c05687d1076d5cd6d75af2ebae5a46https://github.com/sebhildebrandt/systeminformation/commit/7922366d707de7f20995fc8e30ac3153636bf35fhttps://github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-jff2-qjw8-5476https://www.npmjs.com/package/systeminformation