CVE-2021-27562

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 v3 5.5 MEDIUM
CVSS v2.0 4.9 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.9^/10

CVSS v2.0 : MEDIUM

Vector : AV:L/AC:L/Au:N/C:N/I:N/A:C

Exploitability : 3.9 / Impact : 6.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

References

Link	Resource
https://developer.arm.com/support/arm-security-updates	Vendor Advisory
https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/tree/docs/security/security_advisories/svc_caller_sp_fetching_vulnerability.rst	Permissions Required Third Party Advisory
https://developer.arm.com/support/arm-security-updates	Vendor Advisory
https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/tree/docs/security/security_advisories/svc_caller_sp_fetching_vulnerability.rst	Permissions Required Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27562	US Government Resource

Configurations

Configuration 1 (hide)

cpe:2.3:o:trustedfirmware:trusted_firmware-m:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-05-25 19:15

Updated : 2026-06-17 03:45

NVD link : CVE-2021-27562

Mitre link : CVE-2021-27562

CVE.ORG link : CVE-2021-27562

JSON object : View

Products Affected

trustedfirmware

trusted_firmware-m

CWE

CWE-787

Out-of-bounds Write

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