CVE-2026-26354

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-22 · updated 2026-10-26
Weakness: CWE-121

Description

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 PowerProtect Data Domain: from 7.7.1.0 before 7.13.1.60; from 7.14.0.0 before 8.3.1.20; from 8.4.0.0 before 8.6.1.10 — fixed in 7.13.1.60, 8.3.1.20, 8.6.1.10
Dell Powerprotect Dp Series Appliance: before 2.7.9 — fixed in 2.7.9

How to fix

Upgrade to a fixed version: Dell PowerProtect Data Domain 7.13.1.60, 8.3.1.20, 8.6.1.10; Dell Powerprotect Dp Series Appliance 2.7.9. Check the vendor advisory for mitigations.

References

https://www.dell.com/support/kbdoc/en-us/000450699/dsa-2026-060-security-update-for-dell-powerprotect-data-domain-multiple-vulnerabilities

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