CVE-2025-36604
CriticalExploitedPublic exploitDell Unity, version(s) 5.5 and prior, contain(s) an Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability.
Published Aug 4, 2025 · Updated Feb 26, 2026
Key Facts
Patch immediately- CVE-2025-36604 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Unity Operating Environment (Dell), Unity.
- It is exploited in the wild, listed in Industry KEV feed since Oct 9, 2025. Public exploit code is available.
- EPSS estimates a 66% probability of exploitation in the next 30 days.
- Fixed versions are available, including Unity Operating Environment 5.5.1.0, Unity 5.5.1.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
66%
Higher than 99.2% of all scored CVEs
Exploited in the wild
Yes
1 catalog listing
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2025-36604 brief as a PDF
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Description
Dell Unity, version(s) 5.5 and prior, contain(s) an Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to arbitrary command execution.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Oct 9, 2025 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Unity Operating EnvironmentDell | See advisory | 5.5.1.0 |
| Unity | >= N/A | 5.5.1 |
Patched Releases
Unity Operating Environment
5.5.1.0
Unity
5.5.1
Timeline
Publicly disclosed
Aug 4, 2025
Added to Industry KEV feed
Oct 9, 2025
Last updated
Feb 26, 2026
Weakness Type
- CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
References
- advisoryhttps://www.dell.com/support/kbdoc/en-si/000350756/dsa-2025-281-security-update-for-dell-unity-dell-unityvsa-and-dell-unity-xt-security-update-for-multiple-vulnerabilities
- exploitVulnCheck exploitation report
- otherhttps://github.com/watchtowrlabs/watchTowr-vs-Dell-UnityVSA-PreAuth-CVE-2025-36604
- otherhttps://labs.watchtowr.com/its-never-simple-until-it-is-dell-unityvsa-pre-auth-command-injection-cve-2025-36604/
FAQ
Common Questions.
Dell Unity, version(s) 5.5 and prior, contain(s) an Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability.
Affected: Unity Operating Environment (Dell); Unity versions >= N/A. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Oct 9, 2025.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Unity Operating Environment 5.5.1.0, Unity 5.5.1.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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