CVE-2021-27562

MEDIUM KEV

Arm Trusted Firmware M <1.2 - Info Disclosure

Title source: llm

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.

References (3)

[Vendor Advisory] https://developer.arm.com/support/arm-security-updates

[Permissions Required, Third Party Advisory] https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/tree/docs/security/security_advisories/svc_caller_sp_fetching_vulnerability.rst

[US Government Resource] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27562

Scores

CVSS v3 5.5

EPSS 0.4453

EPSS Percentile 97.6%

Attack Vector LOCAL

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

Details

CISA KEV 2021-11-03

VulnCheck KEV 2021-03-15

InTheWild.io 2021-02-23

ENISA EUVD EUVD-2021-14313

CWE

CWE-787

Status published

Products (1)

arm/trusted_firmware-m < 1.2.0

Published May 25, 2021

KEV Added Nov 03, 2021

Tracked Since Feb 18, 2026