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TI-2021-17401 Aliases CVE-2021-40327GHSA-p88f-g9m7-hv9c

Trusted Firmware-M (TF-M) 1.4.0, when Profile Small is used, has incorrect access control.

Priority LOW 29CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-862.

Summary

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.

Why it matters now

EPSS 0.01234 69th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:trustedfirmware:trusted_firmware-m:1.4.0:*:*:*:*:*:*:*1.4.0VulnerableOP-TEE
  • cpe:2.3:o:trustedfirmware:trusted_firmware-m:1.4.0:*:*:*:*:*:*:* Versions 1.4.0 Vulnerable ·OP-TEE

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-40327
  2. 2026-10-03 Alias added: GHSA-p88f-g9m7-hv9c

References

Patch 2

Advisory 1

  • TI-2021-09019 In Arm Trusted Firmware M through 1.2, the NS world may trigger a system halt, an… KEVCVSS 3.1MEDIUM 5.5
  • TI-2023-21113 In Trusted Firmware-M through TF-Mv1.8.0, for platforms that integrate the CryptoCell… CVSS 3.1HIGH 7.5
  • TI-2021-12009 In Trusted Firmware-M through 1.3.0, cleaning up the memory allocated for a multi-part… CVSS 3.1HIGH 7.5
  • TI-2021-19487 Trusted Firmware M 1.4.x through 1.4.1 has a buffer overflow issue in the Firmware Update… CVSS 3.1HIGH 7.8
  • TI-2023-28354 An issue was discovered in Trusted Firmware-M through 2.0.0. CVSS 3.1MEDIUM 4.7

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences