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CVE Record

CVE-2021-34394: Trusty contains a vulnerability in the NVIDIA OTE protocol that is present in all TAs.

Trusty contains a vulnerability in the NVIDIA OTE protocol that is present in all TAs. An incorrect message stream deserialization allows an attacker to use the malicious CA that is run by the user to cause the buffer overflow, which may lead to information disclosure and data modification.

MediumCVSS 4.2Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

Certain NVIDIA Jetson devices running Jetson Linux before r32.5.1 can be crashed or disrupted through a Trusty secure-environment messaging flaw. The attack is local, requires high privileges, and requires the user to run a malicious CA named in NVIDIA's advisory data, so urgency is moderate unless exposed devices run untrusted local code.

Executive priority

Treat as a moderate operational risk for Jetson fleets. It is not internet-routable based on the supplied CVSS data, but affected edge systems should be updated because successful exploitation can cause high availability impact.

Technical view

CVE-2021-34394 is an incorrect message-stream deserialization issue in the NVIDIA OTE protocol in Trusty, present in all TAs on affected Jetson platforms. A malicious CA run by the user can trigger a buffer overflow. The supplied CVSS vector rates impact as high availability only, despite the description mentioning possible information disclosure and data modification.

Likely exposure

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

Exploitation context

The provided sources do not show active exploitation, and CISA KEV status is false. Exploitation requires local access, low attack complexity, high privileges, and user interaction to run the malicious CA described in the source data.

Researcher notes

The source bundle has limited technical detail and no CWE mapping. Note the inconsistency between the narrative impact and CVSS C:N/I:N/A:H. Validate against NVIDIA's advisory before assigning confidentiality or integrity impact in internal tracking.

Mitigation direction

  • Upgrade affected Jetson Linux systems to r32.5.1 or later.
  • Follow NVIDIA advisory guidance for affected Jetson platforms.
  • Restrict execution of untrusted local applications on Jetson devices.
  • Prioritize devices used in production, robotics, industrial, or edge workloads.

Validation and detection

  • Inventory Jetson TX2, TX2 NX, AGX Xavier, and Xavier NX devices.
  • Confirm each device's Jetson Linux version is r32.5.1 or later.
  • Check vulnerability management records for CVE-2021-34394 coverage.
  • Review local application trust controls on affected systems.
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.

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CVE-2021-34394 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
4.2 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:N/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
4.2CVSS 3.1MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H0.63.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

4.2Medium
CVSS 3.1 vector shape for CVE-2021-34394Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:N/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 TX2 series, TX2 NX, AGX Xavier series, Xavier 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.