CVE-2021-0075

Privileged denial of service via firmware out-of-bounds write

Published Nov 17, 2021 · Updated Aug 3, 2024

An out-of-bounds write in Intel PROSet/Wireless WiFi and Killer WiFi firmware allows local users with high privileges to disrupt service. Intel has not published the affected firmware routine, the malformed input, or how the unchecked write is reached. Exploitation requires high local privileges and can interrupt wireless service; no confidentiality impact is reported.

CVSS severity5.7
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An out-of-bounds write in Intel PROSet/Wireless WiFi and Killer WiFi firmware allows local users with high privileges to disrupt service. Intel has not published the affected firmware routine, the malformed input, or how the unchecked write is reached. Exploitation requires high local privileges and can interrupt wireless service; no confidentiality impact is reported.

The record

CVE
CVE-2021-0075
Published
Nov 17, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Nov 17, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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

5.5NIST National Vulnerability DatabaseCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
2.1NIST National Vulnerability DatabaseAV:L/AC:L/Au:N/C:N/I:N/A:P
5.7IntelCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/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.

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No observations available

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

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1499.004Application or System Exploitation

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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