CVE-2017-9607 — The BL1 FWU SMC handling code in ARM Trusted Firmware before 1.4 might allow attackers to write arbitrary data to secure memory, bypass the bl1_plat_mem_check protection mechanism, cause a denial of service, or possibly have unspecified other impact via a crafted AArch32 image, which triggers an integer overflow

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HIGH

The BL1 FWU SMC handling code in ARM Trusted Firmware before 1.4 might allow attackers to write arbitrary data to secure memory, bypass the bl1_plat_mem_check protection mechanism, cause a denial of service, or possibly have unspecified other impact via a crafted AArch32 image, which triggers an integer overflow

Published Sep 20, 2017

7.0

HIGH

CVSS 3.1

EPSS 0.79%

Description

The BL1 FWU SMC handling code in ARM Trusted Firmware before 1.4 might allow attackers to write arbitrary data to secure memory, bypass the bl1_plat_mem_check protection mechanism, cause a denial of service, or possibly have unspecified other impact via a crafted AArch32 image, which triggers an integer overflow.

Affected products

Remediation

No remediation recorded yet.

Metrics

0.79% 0.00793

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.00793

Score over time

2021–2026

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Percentile over time

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Table of values (9 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	0.79% (0.00793)	54.75th	v5 (v2026.06.15)
Sep 20, 2026	0.79% (0.00793)	54.82th	v5 (v2026.06.15)
Jul 20, 2024	0.07% (0.00070)	30.82th	v3 (v2023.03.01)
Jun 13, 2024	0.07% (0.00070)	30.34th	v3 (v2023.03.01)
Mar 7, 2023	0.07% (0.00070)	28.33th	v3 (v2023.03.01)
Mar 6, 2023	0.89% (0.00885)	27.89th	v2 (v2022.01.01)
Feb 4, 2022	0.89% (0.00885)	10.50th	v2 (v2022.01.01)
Feb 3, 2022	0.78% (0.00777)	21.50th	v5 (v2026.06.15)
Apr 14, 2021	0.78% (0.00777)	0.00th	v1

Weaknesses (1)

CWE-190

Integer Overflow

References (2)

https://github.com/ARM-software/arm-trusted-firmware/blob/v1.4/docs/change-log.rst#new-features
x_refsource_CONFIRMIssue TrackingPatchRelease NotesThird Party Advisory
https://github.com/ARM-software/arm-trusted-firmware/wiki/ARM-Trusted-Firmware-Security-Advisory-TFV-4
x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory

Link	Providers	Tags
https://github.com/ARM-software/arm-trusted-firmware/blob/v1.4/docs/change-log.rst#new-features		x_refsource_CONFIRMIssue TrackingPatchRelease NotesThird Party Advisory
https://github.com/ARM-software/arm-trusted-firmware/wiki/ARM-Trusted-Firmware-Security-Advisory-TFV-4		x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Sep 20, 2017

Updated Aug 5, 2024

Reserved Jun 13, 2017

Link CVE-2017-9607

CISA Vulnrichment

Updated n/a

NVD

Status Analyzed

Modified Jun 17, 2026

Link CVE-2017-9607

Red Hat

Severity n/a

Public date n/a

Links CVE-2017-9607