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Vulnerability record · CVE-2026-67271 · published 18 August 2026

CVE-2026-67271: Out-of-bounds write vulnerability

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.

9.8 CVSS 3.1 Critical EPSS 0.83% · top 44.1% CWE-787 · Out-of-bounds write Awaiting Analysis
9.8CVSS 3.1 base score
0.83%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
31 Aug 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

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

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Source: NIST National Vulnerability Database (record CVE-2026-67271), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.