CVE-2021-0076

Service interruption via improper firmware index validation

Published Feb 9, 2022 · Updated May 5, 2025

Improper index validation in Intel PROSet/Wireless, AMT Wireless, and Killer Wi-Fi firmware allows privileged local users to interrupt service. Intel identifies an invalid index, position, or offset check in firmware but does not disclose the affected routine, input path, or exact failure mode. Exploitation requires privileged local access; the reported consequence is service interruption, with low integrity impact and no confidentiality impact.

CVSS severity5.1
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper index validation in Intel PROSet/Wireless, AMT Wireless, and Killer Wi-Fi firmware allows privileged local users to interrupt service. Intel identifies an invalid index, position, or offset check in firmware but does not disclose the affected routine, input path, or exact failure mode. Exploitation requires privileged local access; the reported consequence is service interruption, with low integrity impact and no confidentiality impact.

The record

CVE
CVE-2021-0076
Published
Feb 9, 2022
Updated
May 5, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-20, T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Feb 9, 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

2.1NIST NVDAV:L/AC:L/Au:N/C:N/I:N/A:P
5.1Intel CorporationCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/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.

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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-20Improper Input Validation
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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