Vulnerability · Published Jan 13, 2022 · Assigned by mitre
CVE-2021-40327
Medium 5.9
In plain English
A medium-severity security flaw in the arm-trusted-firmware package (Ubuntu). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 69% of all known vulnerabilities).
Severity (CVSS NVD)5.9Medium
Exploit odds (30 days)1.2%top 30.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:22.04:LTS | arm-trusted-firmware | no fix listed | UBUNTU-CVE-2021-40327 |
| Ubuntu:24.04:LTS | arm-trusted-firmware | no fix listed | UBUNTU-CVE-2021-40327 |
| Ubuntu:25.10 | arm-trusted-firmware | no fix listed | UBUNTU-CVE-2021-40327 |