CVE-2026-26355 Command injection in PowerProtect Data Domain

Medium 6.5 Published 3 Jul 2026 Updated 7 Jul 2026

A high-privileged remote attacker can execute arbitrary OS commands on Dell PowerProtect Data Domain systems via an OS command injection vulnerability.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-26355?

CVE-2026-26355 is a medium-severity command injection vulnerability in Dell Data Domain Operating System, published on 3 Jul 2026. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Dell PowerProtect Data Domain, versions 7.7.1.0 through 8.7, LTS2026 release version 8.6.1.0 through 8.6.1.10, LTS2025 release version 8.3.1.0 through 8.3.1.30, LTS2024 release versions 7.13.1.0 through 7.13.1.70 contain an improper neutralization of special Elements used in an OS command ('OS command Injection') vulnerability. A high privileged attacker with remote access could potentially exploit this vulnerability, leading to command execution.

Weakness: CWE-78

Which versions are affected by CVE-2026-26355?

It affects 1 product.

Products include Dell Data Domain Operating System.

How do I fix CVE-2026-26355?

No fix has been published for CVE-2026-26355 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2026-26355 being exploited?

There is no known exploitation of CVE-2026-26355 in the wild and no public exploit code.

All Dell Data Domain Operating System vulnerabilities

Sources

Also known as GHSA-fh65-mw6q-c8vh.