PowerStore 500T: Protection Mechanism Failure
CVE-2026-79686 is a high-severity protection mechanism failure vulnerability in PowerStore 500T from Dell, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. The record lists versions 4.1.0.6-2771237 or later, 4.3.1.2-2771239 or later as the first without the flaw, so updating PowerStore 500T to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.49% 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 4.1.0.6-2771237 or later or 4.3.1.2-2771239 or later, whichever matches your release line, or a later version.
- Update PowerStore 1000T to 4.1.0.6-2771237 or later or 4.3.1.2-2771239 or later, whichever matches your release line, or a later version.
- Update PowerStore 1200T to 4.1.0.6-2771237 or later or 4.3.1.2-2771239 or later, whichever matches your release line, or a later version.
- Read the advisory on dell.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Dell | PowerStore 500T | before 4.1.0.6-2771237 or later; before 4.3.1.2-2771239 or later | 4.1.0.6-2771237 or later, 4.3.1.2-2771239 or later |
| Dell | PowerStore 1000T | before 4.1.0.6-2771237 or later; before 4.3.1.2-2771239 or later | 4.1.0.6-2771237 or later, 4.3.1.2-2771239 or later |
| Dell | PowerStore 1200T | before 4.1.0.6-2771237 or later; before 4.3.1.2-2771239 or later | 4.1.0.6-2771237 or later, 4.3.1.2-2771239 or later |
| Dell | PowerStore 3000T | before 4.1.0.6-2771237 or later; before 4.3.1.2-2771239 or later | 4.1.0.6-2771237 or later, 4.3.1.2-2771239 or later |
| Dell | PowerStore 3200Q | before 4.1.0.6-2771237 or later; before 4.3.1.2-2771239 or later | 4.1.0.6-2771237 or later, 4.3.1.2-2771239 or later |
| Dell | PowerStore 3200T | before 4.1.0.6-2771237 or later; before 4.3.1.2-2771239 or later | 4.1.0.6-2771237 or later, 4.3.1.2-2771239 or later |
| Dell | PowerStore 5000T | before 4.1.0.6-2771237 or later; before 4.3.1.2-2771239 or later | 4.1.0.6-2771237 or later, 4.3.1.2-2771239 or later |
| Dell | PowerStore 5200Q | before 4.1.0.6-2771237 or later; before 4.3.1.2-2771239 or later | 4.1.0.6-2771237 or later, 4.3.1.2-2771239 or later |
| Dell | PowerStore 5200T | before 4.1.0.6-2771237 or later; before 4.3.1.2-2771239 or later | 4.1.0.6-2771237 or later, 4.3.1.2-2771239 or later |
| Dell | PowerStore 7000T | before 4.1.0.6-2771237 or later; before 4.3.1.2-2771239 or later | 4.1.0.6-2771237 or later, 4.3.1.2-2771239 or later |
| Dell | PowerStore 9000T | before 4.1.0.6-2771237 or later; before 4.3.1.2-2771239 or later | 4.1.0.6-2771237 or later, 4.3.1.2-2771239 or later |
| Dell | PowerStore 9200T | before 4.1.0.6-2771237 or later; before 4.3.1.2-2771239 or later | 4.1.0.6-2771237 or later, 4.3.1.2-2771239 or later |
| Dell | Powerstoreos | 4.1.0.0; 4.1.0.1; 4.1.0.2; 4.1.0.3; 4.1.0.4; 4.1.0.5; 4.3.0.0; 4.3.1.0; and 1 more ranges | Not stated |
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
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- 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:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by CNA (emc.com).
Official description
Dell PowerStore contains a Protection Mechanism Failure vulnerability. An authenticated user with limited privileges could potentially exploit this vulnerability to bypass access restrictions and gain escalated privileges.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Protection Mechanism Failure
The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.
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 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 Protection Mechanism Failure vulnerabilities
- 8.8 High severity
- 8.8 High severity
- 9.8 Critical severity
- 7.8 High severity
- 8.7 High severity
- 7.5 High severity
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