Security readout for executives and security teams
Plain-English summary
This flaw affects NVIDIA Jetson embedded systems using older Jetson Linux releases. A bootloader heap overflow in NVIDIA MB2 could allow denial of service or privilege escalation, but the CVSS vector requires local access, high privileges, and high attack complexity.
Executive priority
Treat this as a moderate-priority embedded device remediation item. It is not a broad remote internet emergency, but affected Jetson devices can suffer high-impact compromise or outage if an attacker already has strong local privileges.
Technical view
CVE-2021-34383 is a potential heap overflow in NVIDIA MB2 bootloader affecting listed Jetson platforms running Jetson Linux before r32.5.1. CVSS 3.1 is 6.4 with AV:L/AC:H/PR:H/UI:N and high 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 versions before r32.5.1.
Exploitation context
The supplied sources do not show active exploitation, and the CVE is not listed as KEV. Practical exploitation appears constrained by local access, high privileges, and high complexity, but affected embedded deployments can still face serious device-impact risk.
Researcher notes
No CWE is provided in the source bundle. Focus validation on NVIDIA MB2 bootloader exposure and Jetson Linux versioning. Avoid assuming other NVIDIA products are affected unless NVIDIA advisory or CVE data explicitly names them.
Mitigation direction
- Update affected Jetson Linux installations to r32.5.1 or newer per NVIDIA guidance.
- Prioritize devices in production, physical edge locations, or safety-sensitive workflows.
- Restrict administrative and physical access to affected Jetson devices until updated.
- Check NVIDIA advisory for any platform-specific upgrade or operational guidance.
Validation and detection
- Inventory Jetson models across production, lab, and field deployments.
- Confirm each device's Jetson Linux release against the r32.5.1 threshold.
- Verify whether AGX Xavier, Xavier NX, TX2, or TX2 NX hardware is present.
- Document updated devices and exceptions requiring compensating access controls.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2021-34383 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
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.
CVSS vector scores
1 official scoreWe 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.
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H0.55.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.4MediumVector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://nvidia.custhelp.com/app/answers/detail/a_id/5205CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.