What is CVE-2026-26354?

CVE-2026-26354 is a high-severity vulnerability in Dell Powerprotect Data Domain, classified under Stack-based Buffer Overflow. CVSS score: 8.1/10. Published 2026-04-22.

How severe is CVE-2026-26354?

High severity. CVSS v3 base score is 8.1 out of 10.

Buffer overflow in Dell Powerprotect Data Domain

CVE-2026-26354

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-base…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (27.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Dell Powerprotect Data Domain — versions 0

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

www.dell.com/support/kbdoc/en-us/000450699/dsa-2026-060-security-update-for-del… (vendor-advisory)

Frequently asked questions

What is CVE-2026-26354?: CVE-2026-26354 is a high-severity vulnerability in Dell Powerprotect Data Domain, classified under Stack-based Buffer Overflow. CVSS score: 8.1/10. Published 2026-04-22.
How severe is CVE-2026-26354?: High severity. CVSS v3 base score is 8.1 out of 10.