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HighVulnerabilityCVE-2026-116576updated 28 Oct 2026, 22:43 UTC

systeminformation on Windows can run attacker-supplied PowerShell via service names

On Windows, a crafted service name passed to this Node.js library can make it run extra PowerShell commands. Those commands run with the same rights as the Node.js app, so they could read, change, or break files it can reach.

Fixed in 5.33.16Official, 2 sources
SeverityHighCVSS 7.8 of 10
Being exploited?UnclearNo reports either way yet
Fix available?Yes5.33.16 · since 28 Oct 2026
How sure is this?Official, 2 sourcesBacked by an official source

How the attack works simplified

  1. 1Crafted service nameInput includes Unicode curly quotes
  2. 2App forwards inputPassed unchecked to services()
  3. 3Sanitizer misses quotesCurly quotes survive sanitization
  4. 4PowerShell injectedFilter string is broken out of
  5. ResultCommands run with Node.js process rights

What happened

In systeminformation before 5.33.16, services() on Windows inserts the caller-supplied name into a PowerShell Get-CimInstance filter. The sanitizer strips ASCII quotes but leaves Unicode curly quotes, which PowerShell treats as string delimiters, letting input escape the filter and inject a PowerShell expression.

Why it is dangerous: Any application that forwards untrusted input to services() or getDynamicData() on Windows lets that input run PowerShell with the Node.js process's permissions. Remote exposure depends on the consuming application; the library itself has no network service.

Are you affected?

You are affected if you use the npm package systeminformation below 5.33.16 on Windows and pass user-controlled input to services() or getDynamicData().

Package / productAffected versionsFixed in
systeminformation · npm< 5.33.165.33.16

What to do

  1. Update systeminformation to 5.33.16 or later.
  2. Stop passing untrusted input to services() or getDynamicData() until the update is applied.
  3. Review whether the Node.js process account has more file or system rights than it needs.

Timeline

  1. 26 Oct 2026, 21:18 UTC
    Publicly disclosed
  2. 26 Oct 2026, 21:18 UTC
    Reported by NVD · NVD
  3. 26 Oct 2026, 21:18 UTC
    Picked up by Zero Radar
  4. 28 Oct 2026, 22:43 UTC
    GitHub Advisory reported on it · GitHub Advisory
  5. 28 Oct 2026, 22:43 UTC
    Fixed version published: systeminformation 5.33.16 · GitHub Advisory

Sources 2 reports, oldest first

Official vendor, government CERT or advisory database

Technical details

ID
CVE-2026-116576 · GHSA-3f7j-7jwc-fxfj
CVSS
7.8 / 10
EPSS
0.1% chance of exploitation within 30 days
Disclosed
26 Oct 2026, 21:18 UTC
On Zero Radar
26 Oct 2026, 21:18 UTC (1 min after disclosure)
Last change
28 Oct 2026, 22:43 UTC

The plain-language parts and the attack diagram were written by an AI model (anthropic/claude-haiku-5.5) from the sources above. Facts like versions, exploitation and dates come from the sources themselves. How Zero Radar works

systeminformation on Windows can run attacker-supplied PowerShell via service names · Zero Radar