VULNERABILITY INTELLIGENCE

CVE-2021-27562

CVSS score5.5 MEDIUM

EPSS probability3.06%

CISA KEVKnown exploited vulnerability

Published2021-05-25

Last modified2026-06-17

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

Known Exploited Vulnerability

Arm Trusted Firmware Out-of-Bounds Write Vulnerability

Vendor / product: Arm / Trusted Firmware

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.

Weakness classification

nvd@nist.gov: CWE-787
134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-787

Primary references

cve@mitre.org — Vendor Advisory
cve@mitre.org — Permissions Required, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Permissions Required, Third Party Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0 — US Government Resource