CVE-2021-34389

TrustZone heap memory disclosure via OTE bounds check

Published Jun 21, 2021 · Updated Aug 4, 2024

Information disclosure in NVIDIA Jetson Linux before 32.5.1 allows local users via a malicious client to read TrustZone heap memory. The Trusty NVIDIA OTE protocol parser applies an incorrect bounds check to attacker-controlled message data, permitting out-of-bounds heap reads in TrustZone. Exploitation requires local access and user interaction to deliver the malicious client request; the documented consequence is memory disclosure without integrity or availability impact.

CVSS severity5.0
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in NVIDIA Jetson Linux before 32.5.1 allows local users via a malicious client to read TrustZone heap memory. The Trusty NVIDIA OTE protocol parser applies an incorrect bounds check to attacker-controlled message data, permitting out-of-bounds heap reads in TrustZone. Exploitation requires local access and user interaction to deliver the malicious client request; the documented consequence is memory disclosure without integrity or availability impact.

The record

CVE
CVE-2021-34389
Published
Jun 21, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-401, T1203
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 21, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.0NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
1.9NVDAV:L/AC:M/Au:N/C:P/I:N/A:N

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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
T1203Exploitation for Client Execution

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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