VULNERABILITY INTELLIGENCE

CVE-2021-27433

CVSS score7.3 HIGH

EPSS probability1.79%

CISA KEVNot currently listed

Published2022-05-03

Last modified2026-06-17

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

Description

ARM mbed-ualloc memory library version 1.3.0 is vulnerable to integer wrap-around in function mbed_krbs, which can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution.

Weakness classification

ics-cert@hq.dhs.gov: CWE-190
nvd@nist.gov: CWE-190

Primary references

ics-cert@hq.dhs.gov — Issue Tracking, Patch, Third Party Advisory
ics-cert@hq.dhs.gov — Third Party Advisory, US Government Resource
af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, US Government Resource