CVE-2026-67271

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-18 · updated 2026-08-31
Weakness: CWE-787

Description

Dell PowerStore SDNAS, contains an Out-of-bounds Write vulnerability in SMB/CIFS. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to denial of service and remote execution. This is a Critical vulnerability as a remote user could send a specially crafted SMB packet and cause a crash, that is persistent in case automatic restarts are enabled. Additionally, a more sophisticated attacker could use the same vulnerability for remote code execution.

Affected products

Dell PowerStore 1000T: before 5.0.0.2-2761110 or later — fixed in 5.0.0.2-2761110 or later
Dell PowerStore 1200T: before 5.0.0.2-2761110 or later — fixed in 5.0.0.2-2761110 or later
Dell PowerStore 3000T: before 5.0.0.2-2761110 or later — fixed in 5.0.0.2-2761110 or later
Dell PowerStore 3200Q: before 5.0.0.2-2761110 or later — fixed in 5.0.0.2-2761110 or later
Dell PowerStore 3200T: before 5.0.0.2-2761110 or later — fixed in 5.0.0.2-2761110 or later
Dell PowerStore 5000T: before 5.0.0.2-2761110 or later — fixed in 5.0.0.2-2761110 or later
Dell PowerStore 500T: before 5.0.0.2-2761110 or later — fixed in 5.0.0.2-2761110 or later
Dell PowerStore 5200Q: before 5.0.0.2-2761110 or later — fixed in 5.0.0.2-2761110 or later
Dell PowerStore 5200T: before 5.0.0.2-2761110 or later — fixed in 5.0.0.2-2761110 or later
Dell PowerStore 7000T: before 5.0.0.2-2761110 or later — fixed in 5.0.0.2-2761110 or later
Dell PowerStore 9000T: before 5.0.0.2-2761110 or later — fixed in 5.0.0.2-2761110 or later
Dell PowerStore 9200T: before 5.0.0.2-2761110 or later — fixed in 5.0.0.2-2761110 or later

How to fix

Upgrade to a fixed version: Dell PowerStore 1000T 5.0.0.2-2761110 or later; Dell PowerStore 1200T 5.0.0.2-2761110 or later; Dell PowerStore 3000T 5.0.0.2-2761110 or later; Dell PowerStore 3200Q 5.0.0.2-2761110 or later; Dell PowerStore 3200T 5.0.0.2-2761110 or later; Dell PowerStore 5000T 5.0.0.2-2761110 or later; Dell PowerStore 500T 5.0.0.2-2761110 or later; Dell PowerStore 5200Q 5.0.0.2-2761110 or later; Dell PowerStore 5200T 5.0.0.2-2761110 or later; Dell PowerStore 7000T 5.0.0.2-2761110 or later; Dell PowerStore 9000T 5.0.0.2-2761110 or later; Dell PowerStore 9200T 5.0.0.2-2761110 or later. Check the vendor advisory for mitigations.

References

https://www.dell.com/support/kbdoc/en-us/000497829/dsa-2026-330-dell-powerstore-t-security-update-for-multiple-vulnerabilities

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