CVE-2021-34376

Privilege escalation via unchecked HDCP command bounds

Published Jun 30, 2021 · Updated Aug 4, 2024

Out-of-bounds memory access in NVIDIA Jetson Linux before 32.5.1 allows local users to disclose data, elevate privileges, or crash Trusty. The HDCP service trusted application processes command 5 without enforcing memory-buffer bounds, allowing operations beyond the intended buffer. Exploitation requires local high-privilege access and user interaction; consequences are bounded to protected-data exposure, privilege escalation, or a Trusty service crash.

CVSS severity7.7
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds memory access in NVIDIA Jetson Linux before 32.5.1 allows local users to disclose data, elevate privileges, or crash Trusty. The HDCP service trusted application processes command 5 without enforcing memory-buffer bounds, allowing operations beyond the intended buffer. Exploitation requires local high-privilege access and user interaction; consequences are bounded to protected-data exposure, privilege escalation, or a Trusty service crash.

The record

CVE
CVE-2021-34376
Published
Jun 30, 2021
Updated
Aug 4, 2024
Vendor
NVIDIA
Product
NVIDIA Jetson
Classifications
CWE-119, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jun 30, 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

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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=All Jetson Linux versions prior to r32.5.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

NVIDIA · NVIDIA Jetsonversion=All Jetson Linux versions prior to r32.5.1

Published CVSS scores

4.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:P
6.7NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
7.7NVIDIA CorporationCVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:H/I:H/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.

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

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1068Exploitation for Privilege Escalation

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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