CVE-2026-67271Network attack vector

Remote code execution via crafted SMB packet

Published Aug 18, 2026 · Updated Aug 19, 2026

Out-of-bounds write in Dell PowerStore SDNAS SMB/CIFS allows remote attackers to crash the appliance or execute arbitrary code. The SMB/CIFS service writes beyond a memory buffer while processing a specially crafted SMB packet; Dell has not disclosed the affected parser or packet field. No authentication is required, and the crash persists when automatic restarts are enabled.

CVSS severity9.8
Critical
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in Dell PowerStore SDNAS SMB/CIFS allows remote attackers to crash the appliance or execute arbitrary code. The SMB/CIFS service writes beyond a memory buffer while processing a specially crafted SMB packet; Dell has not disclosed the affected parser or packet field. No authentication is required, and the crash persists when automatic restarts are enabled.

The record

CVE
CVE-2026-67271
Published
Aug 18, 2026
Updated
Aug 19, 2026
Vendor
Dell Technologies
Product
PowerStore 1000T
Classifications
CWE-787, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <5.0.0.2-2761110 or later

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Dell Technologies · PowerStore 1000Tversion=0 <5.0.0.2-2761110 or later
Dell Technologies · PowerStore 500Tversion=0 <5.0.0.2-2761110 or later
Dell Technologies · PowerStore 5200Qversion=0 <5.0.0.2-2761110 or later
Dell Technologies · PowerStore 9200Tversion=0 <5.0.0.2-2761110 or later
Dell Technologies · PowerStore 5000Tversion=0 <5.0.0.2-2761110 or later
Dell Technologies · PowerStore 9000Tversion=0 <5.0.0.2-2761110 or later
Dell Technologies · PowerStore 3000Tversion=0 <5.0.0.2-2761110 or later
Dell Technologies · PowerStore 3200Qversion=0 <5.0.0.2-2761110 or later
Dell Technologies · PowerStore 1200Tversion=0 <5.0.0.2-2761110 or later
Dell Technologies · PowerStore 7000Tversion=0 <5.0.0.2-2761110 or later
Dell Technologies · PowerStore 3200Tversion=0 <5.0.0.2-2761110 or later
Dell Technologies · PowerStore 5200Tversion=0 <5.0.0.2-2761110 or later

Published CVSS scores

9.8Dell TechnologiesCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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