CVE-2021-34396

Service interruption via writable MB2 bootloader code

Published Jun 22, 2021 · Updated Aug 4, 2024

Improper access control in the NVIDIA Jetson TX2 bootloader before Jetson Linux 32.5.1 allows local users to interrupt service. The bootloader access permissions allow unauthorized software to overwrite NVIDIA MB2 code. The attack requires high local privileges and a complex access path; modifying MB2 code causes a limited service interruption.

CVSS severity3.0
Low
EPSS probability0.20%
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 access control in the NVIDIA Jetson TX2 bootloader before Jetson Linux 32.5.1 allows local users to interrupt service. The bootloader access permissions allow unauthorized software to overwrite NVIDIA MB2 code. The attack requires high local privileges and a complex access path; modifying MB2 code causes a limited service interruption.

The record

CVE
CVE-2021-34396
Published
Jun 22, 2021
Updated
Aug 4, 2024
Vendor
DPDK Project
Product
NVIDIA Jetson TX2
Classifications
T1495
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jun 22, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=All Jetson Linux versions prior to r32.5.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

DPDK Project · NVIDIA Jetson TX2version=All Jetson Linux versions prior to r32.5.1

Published CVSS scores

3.0NVIDIACVSS:3.1/AV:L/AC:H/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 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

T1495Firmware Corruption

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