Is CVE-2021-27562 actively exploited?

CVE-2021-27562 has no public evidence of in-the-wild exploitation as of 2025-11-03.

What is the CVSS score for CVE-2021-27562?

CVE-2021-27562 has a CVSS score of 5.5 (MEDIUM severity). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

How do I patch CVE-2021-27562?

Patch guidance is available from arm security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2021-27562.

Which products are affected by CVE-2021-27562?

1 product: arm trusted firmware-m.

CVE-2021-27562 - remediation guidance & executive summary

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.

CVSS Metrics

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector: local
Complexity: low
Privileges: low
User Action: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
Weaknesses: CWE-787 · Out-of-bounds Write CWE-787 · Out-of-bounds Write

Metadata

Primary Vendor: ARM
Published: 5/25/2021
Last Modified: 11/3/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2021-27562

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary