Detections
Analytics

CVE-2021-31572

critical

Description

The kernel in Amazon Web Services FreeRTOS before 10.4.3 has an integer overflow in stream_buffer.c for a stream buffer.

References

https://github.com/FreeRTOS/FreeRTOS-Kernel/commit/d05b9c123f2bf9090bce386a244fc934ae44db5b

https://www.cisa.gov/news-events/ics-advisories/icsa-21-119-04

https://www.tenable.com/cyber-exposure/2021-threat-landscape-retrospective

Details

Source: Mitre, NVD

Published: 2021-04-22

Updated: 2026-06-17

Named Vulnerability: BadAlloc

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

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

Severity: Critical

EPSS

EPSS: 0.00433