CVE-2026-26354: Dell Data Domain Operating System

Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days.

Dell PowerProtect Data Domain with Domain Operating System (DD OS) of Feature Release versions 7.7.1.0 through 8.6, LTS2025 release version 8.3.1.0 through 8.3.1.10, LTS2024 release versions 7.13.1.0 through 7.13.1.60, contain a stack-based Buffer Overflow vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to arbitrary command execution.

Affected products

• Dell Data Domain Operating System: from 7.7.1.0, before 7.13.1.60 (fixed in 7.13.1.60); from 7.14.0.0, before 8.3.1.20 (fixed in 8.3.1.20); from 8.4.0.0, before 8.6.1.10 (fixed in 8.6.1.10)
• Dell Powerprotect Dp Series Appliance: before 2.7.9 (fixed in 2.7.9)

Published 2026-04-22. Last modified 2026-06-17.