CVE-2026-86378 Dell PowerProtect Data Domain, Feature Release versions 7.7.1.0 through 8.8, LTS2024 release versions 7.13.1.0 through 7.13.1.80, LTS2025 re

High 8.8 Published 28 Oct 2026 Updated 29 Oct 2026

Exploited in the wild: Not known
Fix: None listed

What is CVE-2026-86378?

CVE-2026-86378 is a high-severity vulnerability in Dell PowerProtect Data Domain, published on 28 Oct 2026.

Official description

Dell PowerProtect Data Domain, Feature Release versions 7.7.1.0 through 8.8, LTS2024 release versions 7.13.1.0 through 7.13.1.80, LTS2025 release versions 8.3.1.0 through 8.3.1.40, LTS2026 release versions 8.6.1.0 through 8.6.1.20, contain a Stack-based Buffer Overflow vulnerability. A low privileged attacker with remote access could potentially exploit this vulnerability, leading to unauthorized access.

Weakness: CWE-121

Which versions are affected by CVE-2026-86378?

How do I fix CVE-2026-86378?

No fix has been published for CVE-2026-86378 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-86378 being exploited?

There is no known exploitation of CVE-2026-86378 in the wild and no public exploit code.

Sources

Also known as GHSA-vfjw-xgrm-r7v7.