{"id":"CVE-2017-7563","aliases":["EUVD-2017-16568","GHSA-26gw-4gmp-qgf3"],"status":"published","title":"In ARM Trusted Firmware 1.3, RO memory is always executable at AArch64 Secure EL1, allowing...","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).","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00881,"percentile":0.59388,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-732"],"published":"2017-06-07T15:00:00Z","modified":"2026-06-17T01:24:37Z","products":[{"vendor":"trustedfirmware","product":"trusted_firmware-a"}],"references":[{"url":"https://github.com/ARM-software/arm-trusted-firmware/wiki/ARM-Trusted-Firmware-Security-Advisory-TFV-3","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-7563"},{"url":"https://github.com/advisories/GHSA-26gw-4gmp-qgf3"}],"sources":{"cve":[{"id":"CVE-2017-7563","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).","status":"published","published":"2017-06-07T15:00:00Z","modified":"2024-08-05T16:04:12.016Z","updated_at":"2026-11-02T14:33:20.171335Z"}],"euvd":[{"id":"EUVD-2017-16568","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).","status":"published","published":"2017-06-07T15:00:00Z","modified":"2024-08-05T16:04:12Z","updated_at":"2026-11-03T02:39:08.024596Z"}],"ghsa":[{"id":"GHSA-26gw-4gmp-qgf3","title":"In ARM Trusted Firmware 1.3, RO memory is always executable at AArch64 Secure EL1, allowing...","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).","status":"published","published":"2022-05-13T01:47:01Z","modified":"2023-02-02T05:01:28Z","cvss":[{"version":"3.0","score":8.1,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-732"],"updated_at":"2026-11-02T14:51:11.772726Z"}],"nvd":[{"id":"CVE-2017-7563","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).","status":"published","published":"2017-06-07T15:29:00.177Z","modified":"2026-06-17T01:24:37.25Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-732"],"updated_at":"2026-11-02T14:03:50.782497Z"}]}}