CVE-2021-0199

Privileged local service interruption

Published Nov 17, 2021 · Updated Aug 3, 2024

Improper input validation in Intel Ethernet Controller E810 firmware before 1.6.0.6 allows local users to interrupt service. Intel has not disclosed the firmware input, processing locus, or validation operation that fails. Privileged local access is required, and the reported consequence is limited to disruption of controller operation.

CVSS severity3.4
Low
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper input validation in Intel Ethernet Controller E810 firmware before 1.6.0.6 allows local users to interrupt service. Intel has not disclosed the firmware input, processing locus, or validation operation that fails. Privileged local access is required, and the reported consequence is limited to disruption of controller operation.

The record

CVE
CVE-2021-0199
Published
Nov 17, 2021
Updated
Aug 3, 2024
Vendor
Intel Corporation
Product
Intel Ethernet Controller E810
Classifications
CWE-20, 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

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=before version 1.6.0.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Intel Corporation · Intel Ethernet Controller E810version=before version 1.6.0.6

Published CVSS scores

4.4NIST National Vulnerability DatabaseCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
3.4Intel CorporationCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L

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-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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo