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NVD / CVE Program· CNA nvidia

CVE-2021-34397: Bootloader contains a vulnerability in NVIDIA MB2, which may cause free-the-wrong-heap, which may lead to limited denial of service.

Noroxi assessment

Priority: Monitor (action score 9/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.20% (FIRST EPSS).
  • Someone with local access to the system can trigger it. Administrator privileges are required. No user action is required. No special conditions are required; it is repeatable.
  • According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

LowCVSS 2.3 · v3.1—No exploit No fix recorded
Published
Jun 22, 2021
Updated
Jun 16, 2026
EPSS
0.2% · 10th percentile

Report tools

JSON

Action score

9

Monitor

Low priority for now.

CVSS
9 / 40 · 2.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CNA vs NVD score

NVD
2.3
CNA · nvidia
1.9
0.4 point gap

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2021-34397

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
nvidiajetson linux
nvidiajetson agx xavier 16gb
nvidiajetson agx xavier 32gb
nvidiajetson agx xavier 8gb
nvidiajetson tx2
nvidiajetson tx2 4gb
nvidiajetson tx2 nx
nvidiajetson tx2i
nvidiajetson xavier nx

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • nvidia jetson linuxbefore 32.5.1

Versions reported by the vendor

Affected version ranges reported by the assigning authority (nvidia). Independent of NVD's CPE analysis and usually ahead of it.

  • NVIDIA NVIDIA Jetson TX2 series, TX2 NX, AGX Xavier series, Xavier NX

    • All Jetson Linux versions prior to r32.5.1affected

Same product

nvidia: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-24148NVIDIA Jetson for JetPack contains a vulnerability in the system initialization logic, where an unprivileged attacker could cause the initia
    37Monitor
  • CVE-2024-0108NVIDIA Jetson Linux contains a vulnerability in NvGPU where error handling paths in GPU MMU mapping code fail to clean up a failed mapping a
    35Monitor
  • CVE-2022-42270NVIDIA distributions of Linux contain a vulnerability in nvdla_emu_task_submit, where unvalidated input may allow a local attacker to cause
    31Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2021-34395Jun 22, 2021 · Trusty TLK contains a vulnerability in its access permission settings where it does not properly restrict access to a resource from a user w
    16Monitor
  • ← EarlierCVE-2021-34396Jun 22, 2021 · Bootloader contains a vulnerability in access permission settings where unauthorized software may be able to overwrite NVIDIA MB2 code, whic
    9Monitor
  • Later →CVE-2021-34373Jun 30, 2021 · Trusty trusted Linux kernel (TLK) contains a vulnerability in the NVIDIA TLK kernel where a lack of heap hardening could cause heap overflow
    24Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • Administrator privileges are required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
low · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
High
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
Low

Weakness class (CWE)

CWE-787 · Out-of-bounds Write

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records