CVE-2025-43727 Auth bypass in PowerProtect Data Domain with Data Domain Operating System (DD OS) LTS2023

High 7.5 Published 7 Oct 2025 Updated 8 Oct 2025

An unauthenticated remote attacker can bypass authentication in the RestAPI of Dell PowerProtect Data Domain OS to gain unauthorized access.

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-2025-43727?

CVE-2025-43727 is a high-severity authentication bypass vulnerability in Dell Data Domain Operating System, published on 7 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Dell PowerProtect Data Domain with Data Domain Operating System (DD OS) of Feature Release versions 7.7.1.0 through 8.1.0.10, LTS2024 release Versions 7.13.1.0 through 7.13.1.25, LTS 2023 release versions 7.10.1.0 through 7.10.1.50, contain an incorrect Implementation of Authentication Algorithm vulnerability in the RestAPI. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Unauthorized access.

Weakness: CWE-303

Which versions are affected by CVE-2025-43727?

It affects 1 product.

Products include Dell Data Domain Operating System.

How do I fix CVE-2025-43727?

No fix has been published for CVE-2025-43727 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2025-43727 being exploited?

There is no known exploitation of CVE-2025-43727 in the wild and no public exploit code.

All Dell Data Domain Operating System vulnerabilities

Sources

Also known as GHSA-qj8f-gv99-rchc.