Description
In ARM Trusted Firmware 1.3, RO memory is always executable at AArch64 Secure EL1, allowing attackers to bypass the MT_EXECUTE_NEVER protection mechanism. This issue occurs because of inconsistency in the number of execute-never bits (one bit versus two bits).
Published: 2017-06-07
Score: 8.1 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2017-16568 In ARM Trusted Firmware 1.3, RO memory is always executable at AArch64 Secure EL1, allowing attackers to bypass the MT_EXECUTE_NEVER protection mechanism. This issue occurs because of inconsistency in the number of execute-never bits (one bit versus two bits).
History

Mon, 08 Jun 2026 13:00:00 +0000

Type Values Removed Values Added
First Time appeared Trustedfirmware trusted Firmware-a
CPEs cpe:2.3:o:trustedfirmware:trusted_firmware-m:*:*:*:*:*:*:*:* cpe:2.3:o:trustedfirmware:trusted_firmware-a:*:*:*:*:*:*:*:*
Vendors & Products Trustedfirmware trusted Firmware-m
Trustedfirmware trusted Firmware-a

Mon, 08 Jun 2026 12:45:00 +0000

Type Values Removed Values Added
First Time appeared Trustedfirmware
Trustedfirmware trusted Firmware-m
CPEs cpe:2.3:a:arm:arm_trusted_firmware:*:*:*:*:*:*:*:* cpe:2.3:o:trustedfirmware:trusted_firmware-m:*:*:*:*:*:*:*:*
Vendors & Products Arm
Arm arm Trusted Firmware
Trustedfirmware
Trustedfirmware trusted Firmware-m
Metrics cvssV3_0

{'score': 8.1, 'vector': 'CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Subscriptions

Trustedfirmware Trusted Firmware-a
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-05T16:04:12.016Z

Reserved: 2017-04-06T00:00:00.000Z

Link: CVE-2017-7563

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2017-06-07T15:29:00.177

Modified: 2026-06-17T01:24:37.250

Link: CVE-2017-7563

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses