What is CVE-2021-38260?

CVE-2021-38260 is a high-severity vulnerability in Nxp Mcuxpresso Software Development Kit, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.8/10. Published 2021-10-25.

How severe is CVE-2021-38260?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Nxp Mcuxpresso Software Development Kit

CVE-2021-38260

NXP MCUXpresso SDK v2.7.0 was discovered to contain a buffer overflow in the function USB_HostParseDeviceConfigurationDescriptor().

Vulnerability class: Buffer Overflow

Published 2021-10-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (22.9th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 22.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Nxp Mcuxpresso Software Development Kit — versions 2.7.0

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

mcusec.github.io/vulnerabilities_details (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-38260?: CVE-2021-38260 is a high-severity vulnerability in Nxp Mcuxpresso Software Development Kit, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.8/10. Published 2021-10-25.
How severe is CVE-2021-38260?: High severity. CVSS v3 base score is 7.8 out of 10.