CVE-2021-40327
5.9 MEDIUMTrusted Firmware-M (TF-M) 1.4.0, when Profile Small is used, has incorrect access control
Published: 2022-01-13 · Last updated: 2026-06-05
Severity and scoring
- CVSS
- 5.9 MEDIUM
- Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- CWE
- CWE-862
Affected products
| Vendor | Product |
|---|---|
| trustedfirmware | trusted_firmware-m |
Description
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.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2021-40327
- [Other]https://developer.arm.com/support/arm-security-updates
- [Patch]https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/
- [Patch]https://tf-m-user-guide.trustedfirmware.org/docs/security/security_advisories/profile_small_key_id_encoding_vulnerability.html
- [Other]https://developer.arm.com/support/arm-security-updates
- [Patch]https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/
- [Patch]https://tf-m-user-guide.trustedfirmware.org/docs/security/security_advisories/profile_small_key_id_encoding_vulnerability.html
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