CVE-2021-34400

NVIDIA GPU and Tegra hardware contain a vulnerability in the internal microcontroller which may...

4.1 Medium

NVIDIA GPU and Tegra hardware contain a vulnerability in the internal microcontroller which may allow a user with elevated privileges to gain access to information from unscrubbed memory, which may lead to information disclosure.

Attack profile

How easy it is to exploit

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

What an attacker can affect

Confidentiality: High
Integrity: None
Availability: None

Exploit likelihood

0.21%Down 0.2 points since Nov 21, 2021

What each source reports

CVE List Score used 4.1

Record: CVE-2021-34400
CVSS 3.1: 4.1 MediumCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N
Updated: 2026-11-02

EUVDEUVD-2021-21058 4.1

Record: EUVD-2021-21058
CVSS 3.1: 4.1 MediumCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N
Updated: 2026-11-03

GitHub AdvisoriesGHSA-whmj-mxh4-793f No score

NVIDIA GPU and Tegra hardware contain a vulnerability in the internal microcontroller which may...

Record: GHSA-whmj-mxh4-793f
Updated: 2026-11-02

NVD 4.1

Record: CVE-2021-34400
CVSS 3.1: 4.1 MediumCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N
CVSS 3.1: 4.4 MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0: 2.1 LowAV:L/AC:L/Au:N/C:P/I:N/A:N
Updated: 2026-11-02

Affected products

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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-2021-34400 is a medium vulnerability (CVSS 4.1) in Nvidia Gpu And Tegra Hardware, published November 20, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.21%, the 11th percentile. No source names a fixed version.