CVE-2021-38260

Memory corruption via USB descriptor parsing

Published Oct 25, 2021 · Updated Aug 4, 2024

Buffer overflow in NXP MCUXpresso SDK 2.7.0 allows attackers to cause unspecified impact via crafted USB device descriptors. The USB_HostParseDeviceConfigurationDescriptor() function copies descriptor data without adequate bounds validation, corrupting memory during host configuration parsing. Exploitation requires presenting a crafted descriptor to a device running the affected USB host stack; the public record does not establish whether the result is code execution, data exposure, or service interruption.

CVSS severity7.8
High
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in NXP MCUXpresso SDK 2.7.0 allows attackers to cause unspecified impact via crafted USB device descriptors. The USB_HostParseDeviceConfigurationDescriptor() function copies descriptor data without adequate bounds validation, corrupting memory during host configuration parsing. Exploitation requires presenting a crafted descriptor to a device running the affected USB host stack; the public record does not establish whether the result is code execution, data exposure, or service interruption.

The record

CVE
CVE-2021-38260
Published
Oct 25, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 25, 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

4.6NISTAV:L/AC:L/Au:N/C:P/I:P/A:P
7.8NISTCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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-120Buffer Copy without Checking Size of Input

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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