CVE-2021-27562

Published: May 25, 2021Modified: Nov 3, 2025CISA KEV

5.5

Vector

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

Exploitability: 1.8 / Impact: 3.6

Source: NVD

Description

In Arm Trusted Firmware M through 1.2, the NS world may trigger a system halt, an overwrite of secure data, or the printing out of secure data when calling secure functions under the NSPE handler mode.

Affected (1)

Products: Arm: Trusted Firmware M

Arm

1 product

Trusted Firmware M

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Arm Trusted Firmware M	Up to 1.2.0

Related CWEs

CWE-787

Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

References (5)

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

Source: cve@mitre.org

Vendor Advisory

https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/tree/docs/security/security_advisories/svc_caller_sp_fetching_vulnerability.rst

Source: cve@mitre.org

Permissions RequiredThird Party Advisory

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/tree/docs/security/security_advisories/svc_caller_sp_fetching_vulnerability.rst

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

Permissions RequiredThird Party Advisory

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27562

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

US Government Resource

Timeline

No history available yet.