CVE-2021-33075

Service interruption via firmware race condition

Published May 12, 2022 · Updated May 5, 2025

Race condition in firmware for Intel Optane SSD and SSD DC products allows local users with elevated privileges to interrupt drive service. Intel identifies the defect only as a firmware race condition and does not disclose the affected thread, shared state, or competing operations. Exploitation requires privileged local access and can deny availability; Intel has not specified whether the result is a hang, crash, or reset.

CVSS severity6.0
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in firmware for Intel Optane SSD and SSD DC products allows local users with elevated privileges to interrupt drive service. Intel identifies the defect only as a firmware race condition and does not disclose the affected thread, shared state, or competing operations. Exploitation requires privileged local access and can deny availability; Intel has not specified whether the result is a hang, crash, or reset.

The record

CVE
CVE-2021-33075
Published
May 12, 2022
Updated
May 5, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-362, T1499
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. May 12, 2022CVE publishedPublication date reported by the CVE source.
  2. May 5, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.0IntelCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1499Endpoint Denial of Service

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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