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Dell PowerStore CVE-2026-79683

| EUVDEUVD-2026-69126 HIGH
Protection Mechanism Failure (CWE-693)
2026-09-01 security_alert@emc.com GHSA-r699-gp3q-8j4v
8.8
CVSS 3.1 · Vendor: emc
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Obtain low-privileged PowerStore credentials
  2. Delivery
    Authenticate to management API over network
  3. Exploit
    Craft request with malicious filesystem path
  4. Execution
    Bypass path validation protection mechanism
  5. Persist
    Write attacker-controlled content to arbitrary path
  6. Impact
    Escalate privileges or establish persistence

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V15 - Secure Coding and Architecture Protection mechanism completeness
Exploitation Conditions

Exploitation requires network access to the Dell PowerStore management interface and valid credentials for any authenticated account with limited (low) privileges - there is no requirement for administrative rights. The CVSS vector PR:L confirms that standard, non-privileged authenticated users are sufficient. No special non-default configuration is required based on the description; the flaw is present in the platform's path handling logic regardless of deployment configuration. Exploitation is limited by the authentication prerequisite - unauthenticated external attackers cannot directly exploit this vulnerability without first obtaining credentials. This makes credential hygiene and MFA enforcement meaningful compensating controls prior to patching.

Impact

The CVSS score of 8.8 (High) is well-supported by the vector metrics: the vulnerability is network-reachable, requires no user interaction, demands only low privileges (a standard authenticated storage user), and carries high Confidentiality, Integrity, and Availability impact. No EPSS data is provided in the input, so exploitation probability cannot be quantified independently; however, arbitrary file write vulnerabilities with these characteristics historically attract rapid exploit development. The vulnerability is not listed in CISA KEV and no POC has been identified at time of analysis, which somewhat reduces immediate urgency. That said, the low complexity and minimal privilege bar mean that any authenticated user - including service accounts, backup operators, or compromised credentials obtained through phishing - could exploit this. Real-world risk is high for organizations where PowerStore is internet-exposed or where insider threat is a concern. The tag 'Information Disclosure' in the input metadata is a mislabel - this is an arbitrary write primitive, not a read/disclosure flaw.

Exploit ScenarioDerived

An attacker who has obtained low-privileged credentials to a Dell PowerStore system - for example, via phishing a backup operator account or reusing leaked credentials - authenticates to the storage management API over the network and sends a crafted request with a manipulated filesystem path. By bypassing the platform's path validation controls, the attacker writes a malicious payload (such as a cron job, SSH authorized key, or configuration override) to a sensitive directory, achieving persistent access or privilege escalation on the appliance. No public POC has been identified at time of analysis.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 01, 2026

Arbitrary file write in Dell PowerStore allows authenticated low-privileged users to write attacker-controlled content to arbitrary filesystem paths via a Protection Mechanism Failure (CWE-693). Exploitation requires only network access and limited credentials, making this a credible lateral movement or privilege escalation vector within storage environments. No public exploit code has been identified at time of analysis, but the low complexity and low privilege bar make this a realistic threat against enterprise storage infrastructure.

RemediationAI

Apply the vendor-released security update referenced in Dell DSA-2026-330 at https://www.dell.com/support/kbdoc/en-us/000497829/dsa-2026-330-dell-powerstore-t-security-update-for-multiple-vulnerabilities. The exact patched firmware or software version is not specified in the provided input data and must be confirmed from the advisory itself. Until patching is complete, implement network-level controls to restrict access to PowerStore management interfaces to trusted administrator workstations and management VLANs only - this raises the effective attack complexity by preventing arbitrary authenticated users from reaching the vulnerable endpoint over the network. Additionally, audit and restrict low-privileged accounts that have API or management console access, applying least-privilege principles to reduce the pool of accounts that could be weaponized. Note that network segmentation alone does not eliminate the vulnerability if insider threat is a concern; patching remains the only definitive fix.

Affected VersionsENISA

PowerStore 9200T 0 <4.1.0.6-2771237 or later
PowerStore 9200T 0 <4.3.1.2-2771239 or later
PowerStore 7000T 0 <4.3.1.2-2771239 or later
PowerStore 500T 0 <4.1.0.6-2771237 or later
PowerStore 5200T 0 <4.3.1.2-2771239 or later
PowerStore 1200T 0 <4.3.1.2-2771239 or later
PowerStore 3000T 0 <4.3.1.2-2771239 or later
PowerStore 500T 0 <4.3.1.2-2771239 or later
PowerStore 1000T 0 <4.3.1.2-2771239 or later
PowerStore 1000T 0 <4.1.0.6-2771237 or late
PowerStore 5000T 0 <4.3.1.2-2771239 or later
PowerStore 1200T 0 <4.1.0.6-2771237 or later
PowerStore 9000T 0 <4.1.0.6-2771237 or later
PowerStore 3200Q 0 <4.1.0.6-2771237 or later
PowerStore 5000T 0 <4.1.0.6-2771237 or later
PowerStore 5200T 0 <4.1.0.6-2771237 or later
PowerStore 3200T 0 <4.1.0.6-2771237 or later
PowerStore 9000T 0 <4.3.1.2-2771239 or later
PowerStore 5200Q 0 <4.3.1.2-2771239 or later
PowerStore 3000T 0 <4.1.0.6-2771237 or later
PowerStore 7000T 0 <4.1.0.6-2771237 or later
PowerStore 3200Q 0 <4.3.1.2-2771239 or later
PowerStore 3200T 0 <4.3.1.2-2771239 or later
PowerStore 5200Q 0 <4.1.0.6-2771237 or later

Affects your stack

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Technical ContextAI · show details

Dell PowerStore is an enterprise all-flash storage platform. CWE-693 (Protection Mechanism Failure) indicates that the product fails to properly enforce its own protection mechanisms - in this case, filesystem path validation or access control checks that are intended to confine writes to permitted directories. The flaw allows a user operating within normal privilege boundaries to bypass those boundaries and direct write operations to arbitrary filesystem paths. This class of vulnerability is commonly rooted in insufficient input sanitization on path components (e.g., directory traversal via '../' sequences) or broken authorization checks on storage management APIs. The CVSS vector AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H confirms network delivery, low complexity, and low-privilege requirement, with full CIA impact - consistent with a path-manipulation primitive that can be chained into code execution or system disruption.

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Severity by source

Vendor (emc) PRIMARY 8.8 HIGH
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
vuln.today AI 8.8 HIGH

Network-reachable management API, low complexity; PR:L confirmed by 'limited privileges' prerequisite; arbitrary write enables code execution chain justifying C:H and full I/A impact.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (emc).

CVSS VectorVendor: emc

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Patch available
Sep 01, 2026 - 15:02 EUVD
CVE Published
Sep 01, 2026 - 13:19 cve.org
HIGH 8.8

DescriptionCVE.org

Dell PowerStore contains a Protection Mechanism Failure vulnerability. An authenticated user with limited privileges could potentially exploit this vulnerability to write attacker-controlled content to arbitrary filesystem paths.

Executive ViewAI

Why It Matters

Dell PowerStore storage systems are vulnerable to arbitrary file write attacks by authenticated low-privileged users, creating a significant lateral movement and privilege escalation risk for enterprise storage environments. Without a vendor patch currently available, this vulnerability poses an immediate threat to data integrity and service availability for affected organizations. Leadership should treat this as an urgent security matter requiring prompt mitigation and close monitoring for patch availability.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: Restrict network-level access to PowerStore management interfaces; enforce strong authentication and principle of least privilege for user accounts; implement comprehensive audit logging and monitoring of storage system file access patterns; segment storage networks to limit lateral movement potential; establish secure change management procedures for any firmware updates when available.

Threat Intelligence Overview

EPSS Score
0.3%
Top 75% exploitable
Prevalence
Medium
enterprise all-flash storage appliance, significant but not ubiquitous deployment
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.3%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact
High
Technical Impact
Total

Priority Score

44
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +44
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0
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