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).
References (1)
Core 1
Core References
Third Party Advisory x_refsource_confirm
https://github.com/ARM-software/arm-trusted-firmware/wiki/ARM-Trusted-Firmware-Security-Advisory-TFV-3
Scores
CVSS v3
8.1
EPSS
0.0088
EPSS Percentile
54.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-732
Status
published
Products (2)
arm/arm_trusted_firmware
< 1.3
trustedfirmware/trusted_firmware-a
< 1.3
Published
Jun 07, 2017
Tracked Since
Feb 18, 2026