CVE-2021-27562

MEDIUMCISA KEV

5.5

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.

CVE Details

CVSS v3.1 Score5.5

SeverityMEDIUM

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

Attack VectorLOCAL

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published5/25/2021

Last Modified11/3/2025

Sourcekev

Honeypot Sightings0

CISA KEV

VendorArm

ProductTrusted Firmware

Vulnerability NameArm Trusted Firmware Out-of-Bounds Write Vulnerability

KEV Date Added2021-11-03

Remediation Due Date2021-11-17

Ransomware UseUnknown

Affected Products

arm:trusted_firmware-m

Weaknesses (CWE)

CWE-787CWE-787

References

https://developer.arm.com/support/arm-security-updates(cve@mitre.org)

https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/tree/docs/security/security_advisories/svc_caller_sp_fetching_vulnerability.rst(cve@mitre.org)

https://developer.arm.com/support/arm-security-updates(af854a3a-2127-422b-91ae-364da2661108)

https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/tree/docs/security/security_advisories/svc_caller_sp_fetching_vulnerability.rst(af854a3a-2127-422b-91ae-364da2661108)

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27562(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

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