CVE-2021-0007

Local service interruption via uncaught firmware exception

Published Aug 11, 2021 · Updated Aug 3, 2024

Uncaught firmware exception in Intel Ethernet 800 Series Network Adapters before 1.5.1.0 allows local users to interrupt service. Intel identifies the locus only as adapter firmware and has not published the exceptional condition, triggering input, or code path that remains uncaught. Exploitation requires privileged local access and affects availability only, with no reported ability to read or alter data.

CVSS severity4.4
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncaught firmware exception in Intel Ethernet 800 Series Network Adapters before 1.5.1.0 allows local users to interrupt service. Intel identifies the locus only as adapter firmware and has not published the exceptional condition, triggering input, or code path that remains uncaught. Exploitation requires privileged local access and affects availability only, with no reported ability to read or alter data.

The record

CVE
CVE-2021-0007
Published
Aug 11, 2021
Updated
Aug 3, 2024
Vendor
Intel Corporation
Product
Intel Ethernet 800 Series Network Adapters
Classifications
CWE-755, T1499
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Aug 11, 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?

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

  1. Affected versionversion=before version 1.5.1.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Intel Corporation · Intel Ethernet 800 Series Network Adaptersversion=before version 1.5.1.0

Published CVSS scores

2.1NIST NVDAV:L/AC:L/Au:N/C:N/I:N/A:P
4.4Intel CorporationCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
4.4NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/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 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-755Improper Handling of Exceptional Conditions
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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