What is CVE-2026-28263?

CVE-2026-28263 is a medium-severity vulnerability in Dell Data Domain Operating System, classified under Cross-site Scripting. CVSS score: 5.9/10. Published 2026-04-17.

How severe is CVE-2026-28263?

Medium severity. CVSS v3 base score is 5.9 out of 10.

XSS in Dell Data Domain Operating System

CVE-2026-28263

Dell PowerProtect Data Domain with Data Domain Operating System (DD OS) of Feature Release versions 7.7.1.0 through 8.5, LTS2025 release version 8.3.1.0 through 8.3.1.20, LTS2024 release versions 7.13.1.0 through 7.13.1.50, contain a cross-site Scripting vulnerability. A high privileged attacker with remote access could potentially exploit this vulnerability, leading to Script injection.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (10.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L.

Affected products

Dell Data_domain_operating_system
Dell Powerprotect Data Domain — versions 0
Dell Powerprotect_data_domain

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security_alert@emc.com (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-28263?: CVE-2026-28263 is a medium-severity vulnerability in Dell Data Domain Operating System, classified under Cross-site Scripting. CVSS score: 5.9/10. Published 2026-04-17.
How severe is CVE-2026-28263?: Medium severity. CVSS v3 base score is 5.9 out of 10.