PatchSiren cyber security CVE debrief

CVE-2026-56086 Dell CVE debrief

CVE-2026-56086 is an Incorrect Authorization vulnerability in Dell PowerProtect Data Domain, versions 7.7.1.0 through 8.6, 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 low privileged attacker with remote access could potentially exploit this vulnerability, leading to unauthorized access. The vulnerability can be exploited remotely and has a CVSS score of 8.8, indicating a HIGH severity level.

Vendor: Dell
Product: PowerProtect Data Domain
CVSS: HIGH 8.8
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-07-08
Original CVE updated: 2026-07-09
Advisory published: 2026-07-08
Advisory updated: 2026-07-09

Who should care

Organizations using Dell PowerProtect Data Domain versions 7.7.1.0 through 8.6, 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 should prioritize patching this vulnerability to prevent potential unauthorized access. This includes operators, security teams, and administrators responsible for these systems.

Technical summary

The vulnerability is caused by an Incorrect Authorization issue in Dell PowerProtect Data Domain, versions 7.7.1.0 through 8.6, 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 low privileged attacker with remote access could potentially exploit this vulnerability, leading to unauthorized access. The CVSS score for this vulnerability is 8.8, indicating a HIGH severity level. This vulnerability can be exploited remotely, and its successful exploitation could lead to unauthorized access.

Defensive priority

High

Recommended defensive actions

Apply patches or updates provided by Dell to address the vulnerability
Restrict remote access to Dell PowerProtect Data Domain systems
Monitor system logs for suspicious activity
Implement additional security controls, such as multi-factor authentication
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 2026-07-08T14:17:14.980Z and was last modified on 2026-07-09T04:17:46.973Z. The NVD entry is currently Analyzed. This vulnerability affects Dell PowerProtect Data Domain, versions 7.7.1.0 through 8.6, 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. The vulnerability is caused by an Incorrect Authorization issue. A low privileged attacker with remote access could potentially exploit this vulnerability, leading to unauthorized access.

Sources and references

Verified primary and authoritative sources

CVE-2026-56086 CVE Program record
Publisher, destination, and source semantics verified

URL: https://www.cve.org/CVERecord?id=CVE-2026-56086

CVE Program - Official CVE Program record with source-provided CVE metadata.
CVE-2026-56086 NVD vulnerability detail
Publisher, destination, and source semantics verified

URL: https://nvd.nist.gov/vuln/detail/CVE-2026-56086

NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

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.