PowerStore 500T: Missing Authorization
CVE-2026-67262 is a high-severity missing authorization vulnerability in PowerStore 500T from Dell, with a CVSS 3.1 base score of 8.1 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists version 5.0.0.2-2761110 or later as the first without the flaw, so updating PowerStore 500T to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.4% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update PowerStore 500T to 5.0.0.2-2761110 or later or a later version.
- Update PowerStore 1000T to 5.0.0.2-2761110 or later or a later version.
- Update PowerStore 1200T to 5.0.0.2-2761110 or later or a later version.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Dell | PowerStore 500T | before 5.0.0.2-2761110 or later | 5.0.0.2-2761110 or later |
| Dell | PowerStore 1000T | before 5.0.0.2-2761110 or later | 5.0.0.2-2761110 or later |
| Dell | PowerStore 1200T | before 5.0.0.2-2761110 or later | 5.0.0.2-2761110 or later |
| Dell | PowerStore 3000T | before 5.0.0.2-2761110 or later | 5.0.0.2-2761110 or later |
| Dell | PowerStore 3200Q | before 5.0.0.2-2761110 or later | 5.0.0.2-2761110 or later |
| Dell | PowerStore 3200T | before 5.0.0.2-2761110 or later | 5.0.0.2-2761110 or later |
| Dell | PowerStore 5000T | before 5.0.0.2-2761110 or later | 5.0.0.2-2761110 or later |
| Dell | PowerStore 5200Q | before 5.0.0.2-2761110 or later | 5.0.0.2-2761110 or later |
| Dell | PowerStore 5200T | before 5.0.0.2-2761110 or later | 5.0.0.2-2761110 or later |
| Dell | PowerStore 7000T | before 5.0.0.2-2761110 or later | 5.0.0.2-2761110 or later |
| Dell | PowerStore 9000T | before 5.0.0.2-2761110 or later | 5.0.0.2-2761110 or later |
| Dell | PowerStore 9200T | before 5.0.0.2-2761110 or later | 5.0.0.2-2761110 or later |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- HighSuccess depends on conditions outside the attacker's control.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by CNA (emc.com).
Official description
Dell PowerStore contains a Missing Authorization vulnerability. An attacker with access to a mapped host could exploit this vulnerability to read from or write to LUNs that the host is not authorized to access, bypassing per-initiator LUN access controls and leading to protection mechanism bypass.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Missing Authorization
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.
How developers prevent this class of flaw
- Divide the product into anonymous, normal, privileged, and administrative areas. Reduce the attack surface by carefully mapping roles with data and functionality. Use role-based access control (RBAC) to enforce the roles at the appropriate boundaries. Note that this approach may not protect against horizontal authorization, i.e., it will not protect a user from attacking others with the same role.
- Ensure that access control checks are performed related to the business logic. These checks may be different than the access control checks that are applied to more generic resources such as files, connections, processes, memory, and database records. For example, a database may restrict access for medical records to a specific database user, but each record might only be intended to be accessible to the patient and the patient's doctor.
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. For example, consider using authorization frameworks such as the JAAS Authorization Framework and the OWASP ESAPI Access Control feature.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other references
Other vulnerabilities in PowerStore 500T
- 8.8 High severity
- 9.1 Critical severity
- 8.1 High severity
- 8.8 High severity
- 8.7 High severity
- 7.2 High severity
Recent Missing Authorization vulnerabilities
- 8.7 High severity
- 7.7 High severity
- 9.2 Critical severity
- 8.8 High severity
- 7.1 High severity
- 8.8 High severity
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