Vulnerability in Trustedfirmware Trusted Firmware-M

CVE-2026-54467

On the Trusted Firmware-M (TF-M) 2 through 2.3.0 platform before 00d1b3e, mailbox initialization on PSOC64 and RP2350 accepts a non-secure, unvalidated, supplied pointer.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:P/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (6.2th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 6.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-54467: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-54467?
CVE-2026-54467 is a high-severity vulnerability in Trustedfirmware Trusted Firmware-M, classified under CWE-283. CVSS score: 7.0/10. Published 2026-08-26.
How severe is CVE-2026-54467?
High severity. CVSS v3 base score is 7.0 out of 10.