Trusted Firmware-M (TF-M) 1.4.0, when Profile Small is used, has incorrect access control. NSPE can access a secure key (held by the Crypto service) based solely on knowledge of its key ID. For example, there is no authorization check associated with the relationship between a caller and a key owner.
References
| Link | Resource |
|---|---|
| https://developer.arm.com/support/arm-security-updates | Third Party Advisory |
| https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/ | Patch Vendor Advisory |
| https://tf-m-user-guide.trustedfirmware.org/docs/security/security_advisories/profile_small_key_id_encoding_vulnerability.html | Patch Vendor Advisory |
| https://developer.arm.com/support/arm-security-updates | Third Party Advisory |
| https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/ | Patch Vendor Advisory |
| https://tf-m-user-guide.trustedfirmware.org/docs/security/security_advisories/profile_small_key_id_encoding_vulnerability.html | Patch Vendor Advisory |
Configurations
History
05 Jun 2026, 20:36
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:trustedfirmware:trusted_firmware-m:1.4.0:*:*:*:*:*:*:* |
21 Nov 2024, 06:23
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://developer.arm.com/support/arm-security-updates - Third Party Advisory | |
| References | () https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/ - Patch, Vendor Advisory | |
| References | () https://tf-m-user-guide.trustedfirmware.org/docs/security/security_advisories/profile_small_key_id_encoding_vulnerability.html - Patch, Vendor Advisory |
Information
Published : 2022-01-13 16:15
Updated : 2026-06-05 20:36
NVD link : CVE-2021-40327
Mitre link : CVE-2021-40327
CVE.ORG link : CVE-2021-40327
JSON object : View
Products Affected
trustedfirmware
- trusted_firmware-m
CWE
CWE-862
Missing Authorization