CVE-2026-26354 Memory corruption in PowerProtect Data Domain

High 8.1 Published 22 Apr 2026 Updated 23 Apr 2026

Unauthenticated remote attackers can exploit a stack-based buffer overflow in Dell PowerProtect Data Domain OS to execute arbitrary commands.

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

What is CVE-2026-26354?

CVE-2026-26354 is a high-severity memory corruption vulnerability in Dell Data Domain Operating System, published on 22 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-787, CWE-121

Which versions are affected by CVE-2026-26354?

It affects 2 products.

Products include Dell Data Domain Operating System, Dell Powerprotect Dp Series Appliance.

How do I fix CVE-2026-26354?

No fix has been published for CVE-2026-26354 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-26354 being exploited?

There is no known exploitation of CVE-2026-26354 in the wild and no public exploit code.

All Dell Data Domain Operating System vulnerabilities

Sources

Also known as GHSA-h5cf-xw55-j4wj.