CVE-2021-43619

7.8 HIGH

Published: March 01, 2022 Modified: June 05, 2026

Description

Trusted Firmware M 1.4.x through 1.4.1 has a buffer overflow issue in the Firmware Update partition. In the IPC model, a psa_fwu_write caller from SPE or NSPE can overwrite stack memory locations.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

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

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://developer.arm.com/support/arm-security-updates

Source: cve@mitre.org

Vendor Advisory

https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/

Source: cve@mitre.org

Patch Third Party Advisory

https://tf-m-user-guide.trustedfirmware.org/docs/security/security_advisories/fwu_write_vulnerability.html

Source: cve@mitre.org

Exploit Patch Third Party Advisory

https://www.trustedfirmware.org

Source: cve@mitre.org

Product

https://developer.arm.com/support/arm-security-updates

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/

Source: af854a3a-2127-422b-91ae-364da2661108

Patch Third Party Advisory

https://tf-m-user-guide.trustedfirmware.org/docs/security/security_advisories/fwu_write_vulnerability.html

Source: af854a3a-2127-422b-91ae-364da2661108

Exploit Patch Third Party Advisory

https://www.trustedfirmware.org

Source: af854a3a-2127-422b-91ae-364da2661108

Product

8 reference(s) from NVD

Quick Stats

CVSS v3 Score

7.8 / 10.0

EPSS (Exploit Probability)

0.4%

33th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-120

Affected Vendors

trustedfirmware

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