What is CVE-2017-15031?

CVE-2017-15031 is a high-severity vulnerability in Trustedfirmware Trusted Firmware-A, classified under Information Disclosure. CVSS score: 7.5/10. Published 2018-12-18.

How severe is CVE-2017-15031?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2017-15031 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Information disclosure in Trustedfirmware Trusted Firmware-A

CVE-2017-15031

In all versions of ARM Trusted Firmware up to and including v1.4, not initializing or saving/restoring the PMCR_EL0 register can leak secure world timing information.

Vulnerability class: Information Disclosure

Published 2018-12-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.019 (79.6th percentile), scored 2026-10-23.

Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 79.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: +0.000

Affected products

Trustedfirmware Trusted Firmware-A

Weakness classification (CWE)

CWE-200 — Information Disclosure

Public proof-of-concept exploits

axxia/axxia_

References

github.com/ARM-software/arm-trusted-firmware/wiki/ARM-Trusted-Firmware-Security… (Patch, Third Party Advisory)
www.securityfocus.com/bid/106271 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2017-15031?: CVE-2017-15031 is a high-severity vulnerability in Trustedfirmware Trusted Firmware-A, classified under Information Disclosure. CVSS score: 7.5/10. Published 2018-12-18.
How severe is CVE-2017-15031?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2017-15031 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.