CVE-2026-28263 Dell CVE debrief

Who should care

Defenders responsible for Dell PowerProtect Data Domain systems, particularly those with remote access, should assess exposure and prioritize remediation. Defenders should verify exposure and apply remediation. This medium severity cross-site scripting vulnerability in Dell PowerProtect Data Domain could allow a high privileged attacker with remote access to inject scripts, potentially leading to unauthorized actions. Defenders responsible for these Defen

Why it matters

This medium severity cross-site scripting vulnerability in Dell PowerProtect Data Domain could allow a high privileged attacker with remote access to inject scripts, potentially leading to unauthorized actions. Defenders responsible for these systems should assess exposure, prioritize remediation, and monitor for potential script injection attempts.

• Script injection could lead to unauthorized actions
• High privileged attacker could exploit this vulnerability remotely
• Defenders should verify exposure and apply remediation

Technical summary

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. This vulnerability could allow a high privileged attacker with remote access to inject scripts, potentially leading to unauthorized actions.

Defensive priority

Defenders should prioritize verifying exposure and applying vendor remediation for this medium severity vulnerability.

Recommended defensive actions

• Verify exposure by reviewing system versions and configurations
• Apply vendor remediation as available
• Monitor for potential script injection attempts
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, affected versions, and potential impact. A high privileged attacker with remote access could potentially exploit this cross-site scripting vulnerability in 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. Defenders should verify exposure and apply remediation.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.