CVE-2025-46643 Memory corruption in PowerProtect Data Domain with Data Domain Operating System (DD OS) Feature Release

Low 2.3 Published 9 Jan 2026 Updated 9 Jan 2026

A local high-privileged attacker can exploit a heap-based buffer overflow in Dell Data Domain OS to cause a denial of service.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-46643?

CVE-2025-46643 is a low-severity memory corruption vulnerability in Dell Data Domain Operating System, published on 9 Jan 2026. It can only be exploited from the same machine or local network, 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 8.4.0.0, LTS2025 release version 8.3.1.10, LTS2024 release versions 7.13.1.0 through 7.13.1.40, LTS 2023 release versions 7.10.1.0 through 7.10.1.70, contain a Heap-based Buffer Overflow vulnerability. A high privileged attacker with local access could potentially exploit this vulnerability, leading to Denial of service.

Weakness: CWE-787, CWE-122

Which versions are affected by CVE-2025-46643?

It affects 1 product.

Products include Dell Data Domain Operating System.

How do I fix CVE-2025-46643?

No fix has been published for CVE-2025-46643 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-2025-46643 being exploited?

There is no known exploitation of CVE-2025-46643 in the wild and no public exploit code.

All Dell Data Domain Operating System vulnerabilities

Sources

Also known as GHSA-96v6-28qx-cr4q.