PatchSiren cyber security CVE debrief

CVE-2026-53478 Dell CVE debrief

CVE-2026-53478 is an OS command injection vulnerability in Dell PowerProtect Data Domain. A high-privileged attacker with remote access could exploit this vulnerability, leading to command execution. The vulnerability affects multiple versions of Dell PowerProtect Data Domain, including versions 7.7.1.0 through 8.7, LTS2026 release version 8.6.1.0 through 8.6.1.10, LTS2025 release version 8.3.1.0 through 8.3.1.30, LTS2024 release versions 7.13.1.0 through 7.13.1.70. Security teams and administrators responsible for Dell PowerProtect Data Domain systems should be aware of this vulnerability and take immediate action to mitigate the risk.

Vendor: Dell
Product: PowerProtect Data Domain
CVSS: HIGH 7.2
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-07-03
Original CVE updated: 2026-07-07
Advisory published: 2026-07-03
Advisory updated: 2026-07-07

Who should care

Security teams and administrators responsible for Dell PowerProtect Data Domain systems should be aware of this vulnerability and take immediate action to mitigate the risk. This includes applying vendor-provided security updates, restricting remote access to the affected systems, monitoring the affected systems for suspicious activity, and performing regular vulnerability assessments and penetration testing.

Technical summary

Dell PowerProtect Data Domain, versions 7.7.1.0 through 8.7, LTS2026 release version 8.6.1.0 through 8.6.1.10, LTS2025 release version 8.3.1.0 through 8.3.1.30, LTS2024 release versions 7.13.1.0 through 7.13.1.70, contain an improper neutralization of special elements used in an OS command ('OS command Injection') vulnerability. A high privileged attacker with remote access could potentially exploit this vulnerability, leading to command execution. The vulnerability can be addressed by applying vendor-provided security updates.

Defensive priority

High

Recommended defensive actions

Apply the vendor-provided security updates
Restrict remote access to the affected systems
Monitor the affected systems for suspicious activity
Perform regular vulnerability assessments and penetration testing
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

Evidence notes

The CVE record was published on 2026-07-03T15:16:32.840Z and was last modified on 2026-07-07T05:16:52.100Z. The NVD entry is currently Undergoing Analysis. This vulnerability affects Dell PowerProtect Data Domain, versions 7.7.1.0 through 8.7, LTS2026 release version 8.6.1.0 through 8.6.1.10, LTS2025 release version 8.3.1.0 through 8.3.1.30, LTS2024 release versions 7.13.1.0 through 7.13.1.70. A high privileged attacker with remote access could potentially exploit this vulnerability, leading to command execution. The vendor has provided security updates to address this issue.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-03T15:16:32.840Z and has not been modified since then. The NVD entry is currently Undergoing Analysis.