What is CVE-2021-22680?

CVE-2021-22680 is a high-severity vulnerability in Nxp Mqx, classified under Integer Overflow or Wraparound. CVSS score: 7.3/10. Published 2022-05-03.

How severe is CVE-2021-22680?

High severity. CVSS v3 base score is 7.3 out of 10.

Integer overflow in Nxp Mqx

CVE-2021-22680

NXP MQX Versions 5.1 and prior are vulnerable to integer overflow in mem_alloc, _lwmem_alloc and _partition functions. This unverified memory assignment can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution.

Vulnerability class: Integer Overflow

Published 2022-05-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.016 (74.2th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 74.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.015 · newest: 0.016 · change: +0.001

Affected products

Nxp Mqx — versions unspecified

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

www.cisa.gov/uscert/ics/advisories/icsa-21-119-04 (US Government Resource, Third Party Advisory, Mitigation)

Frequently asked questions

What is CVE-2021-22680?: CVE-2021-22680 is a high-severity vulnerability in Nxp Mqx, classified under Integer Overflow or Wraparound. CVSS score: 7.3/10. Published 2022-05-03.
How severe is CVE-2021-22680?: High severity. CVSS v3 base score is 7.3 out of 10.