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CVE Record

CVE-2021-34376: Trusty contains a vulnerability in the HDCP service TA where bounds checking in command 5 is missing.

Trusty contains a vulnerability in the HDCP service TA where bounds checking in command 5 is missing. Improper restriction of operations within the bounds of a memory buffer might lead to denial of service, escalation of privileges, and information disclosure.

HighCVSS 7.7Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This is a high-severity NVIDIA Jetson issue in Trusty, a trusted execution environment component. A missing bounds check in the HDCP trusted application could allow denial of service, privilege escalation, or information disclosure, but the source data indicates local access, high privileges, and user interaction are required.

Executive priority

Treat this as a high-priority platform maintenance issue for Jetson fleets, especially in edge, lab, or appliance deployments with local access risk. It is not evidenced as internet-remote or actively exploited in the supplied sources.

Technical view

CVE-2021-34376 affects NVIDIA Jetson Linux versions before r32.5.1 on listed Xavier and TX2 platforms. The HDCP service trusted application lacks bounds checking in command 5. The CVSS 3.1 vector is AV:L/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H, indicating local, privileged exploitation with potential confidentiality, integrity, and availability impact.

Likely exposure

Exposure is limited to NVIDIA Jetson AGX Xavier series, Jetson Xavier NX, Jetson TX2 series, and Jetson TX2 NX running Jetson Linux before r32.5.1.

Exploitation context

The provided sources do not show CISA KEV listing or active exploitation. Exploitation is described as local, low-complexity, requiring high privileges and user interaction, so risk is highest on shared, physically accessible, or weakly administered Jetson systems.

Researcher notes

The source names the vulnerable component as the Trusty HDCP service TA and the issue as missing bounds checking in command 5. No CWE is listed in the bundle. Avoid assuming exploit availability, broader NVIDIA products, or non-vendor mitigations without additional evidence.

Mitigation direction

  • Review NVIDIA advisory a_id/5205 for vendor-specific remediation guidance.
  • Update affected Jetson Linux deployments to r32.5.1 or later where applicable.
  • Prioritize devices exposed to untrusted local users or physical access.
  • Restrict privileged local access until affected systems are updated.
  • Track remediation status for every affected Jetson model in inventory.

Validation and detection

  • Inventory Jetson AGX Xavier, Xavier NX, TX2, and TX2 NX devices.
  • Verify each device's Jetson Linux release against r32.5.1.
  • Confirm whether affected devices use versions listed as prior to r32.5.1.
  • Check vulnerability scanners or asset records for CVE-2021-34376 coverage.
  • Document exceptions where updates cannot be applied immediately.
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-2021-34376 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-2021-34376Attack 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.