CVE-2021-0004

Improper buffer restrictions in the firmware of Intel(R) Ethernet Adapters 800 Series Controllers...

4.4 Medium

Improper buffer restrictions in the firmware of Intel(R) Ethernet Adapters 800 Series Controllers and associated adapters before version 1.5.3.0 may allow a privileged user to potentially enable denial of service via local access.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: High
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.26%Down 0.3 points since Aug 12, 2021

What each source reports

NVD Score used 4.4

Record: CVE-2021-0004
CVSS 3.1: 4.4 MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0: 2.1 LowAV:L/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-119
Updated: 2026-11-02

CVE List No score

Record: CVE-2021-0004
Updated: 2026-11-02

EUVDEUVD-2021-2623 No score

Record: EUVD-2021-2623
Updated: 2026-11-03

GitHub AdvisoriesGHSA-p85q-fm7j-ffmp 4.4

Improper buffer restrictions in the firmware of Intel(R) Ethernet Adapters 800 Series Controllers...

Record: GHSA-p85q-fm7j-ffmp
CVSS 3.1: 4.4 MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-119
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-0004 is a medium vulnerability (CVSS 4.4) in Fedoraproject Fedora, published August 11, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.26%, the 18th percentile. No source names a fixed version.