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CVE Record

CVE-2021-34378: Trusty contains a vulnerability in the HDCP service TA where bounds checking in command 11 is missing.

Trusty contains a vulnerability in the HDCP service TA where bounds checking in command 11 is missing. Improper restriction of operations within the bounds of a memory buffer might lead to information disclosure, denial of service, or escalation of privileges.

HighCVSS 7.7Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This NVIDIA Jetson vulnerability affects embedded devices running older Jetson Linux releases. A flaw in the Trusty HDCP trusted application can allow buffer-boundary abuse, with potential confidentiality, integrity, and availability impact. The attack is local and requires high privileges and user interaction, so urgency is highest for shared, field-accessible, or multi-user Jetson deployments.

Executive priority

Treat as a high-priority embedded-device update where affected Jetson systems support production, physical security, robotics, AI edge workloads, or customer-facing services.

Technical view

CVE-2021-34378 is missing bounds checking in command 11 of the Trusty HDCP service TA. NVIDIA lists Jetson AGX Xavier, Xavier NX, TX2 series, and TX2 NX devices running Jetson Linux before r32.5.1 as affected. The CVSS 3.1 vector is AV:L/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H.

Likely exposure

Exposure is limited to affected NVIDIA Jetson products running Jetson Linux versions prior to r32.5.1, especially embedded systems where privileged local access is possible.

Exploitation context

The source bundle does not show CISA KEV listing or active exploitation evidence. CVSS indicates exploitation requires local access, high privileges, and user interaction, but can have high impact if reached.

Researcher notes

Evidence is concise but vendor-confirmed. The issue is in a trusted application inside Trusty, not a remote network service. Public details do not provide exploit mechanics, CWE assignment, or product-specific compensating controls beyond the affected-version boundary.

Mitigation direction

  • Identify affected Jetson models and Jetson Linux versions in inventory.
  • Update affected devices to Jetson Linux r32.5.1 or later per NVIDIA guidance.
  • Prioritize field-deployed, shared-access, and physically accessible Jetson systems.
  • Restrict privileged local access until updates are confirmed.
  • Review NVIDIA advisory for deployment-specific update instructions.

Validation and detection

  • Confirm device model is AGX Xavier, Xavier NX, TX2 series, or TX2 NX.
  • Check each device runs Jetson Linux r32.5.1 or later.
  • Verify update status against NVIDIA advisory a_id/5205.
  • Document any devices that cannot be updated immediately.
  • Review privileged local account access on remaining exposed devices.
Prepared
Confidence
high
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2021-34378 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.7 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
7.7CVSS 3.1HighCVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H1.16Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

7.7High
CVSS 3.1 vector shape for CVE-2021-34378Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
NVIDIANVIDIA Jetson AGX Xavier series, Jetson Xavier NX, Jetson TX2 series, Jetson TX2 NXAll Jetson Linux versions prior to r32.5.1Listed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.