{"id":"CVE-2021-35465","aliases":["EUVD-2021-22107","GHSA-2g78-x942-h8vj"],"status":"published","title":"Certain Arm products before 2021-08-23 do not properly consider the effect of exceptions on a...","description":"Certain Arm products before 2021-08-23 do not properly consider the effect of exceptions on a VLLDM instruction. A Non-secure handler may have read or write access to part of a Secure context. This affects Arm Cortex-M33 r0p0 through r1p0, Arm Cortex-M35P r0, Arm Cortex-M55 r0p0 through r1p0, and Arm China STAR-MC1 (in the STAR SE configuration).","severity":{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N","level":"low","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00298,"percentile":0.22677,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-863"],"published":"2021-08-23T12:44:08Z","modified":"2026-06-17T03:57:31Z","products":[{"vendor":"arm","product":"china_star-mc1_firmware"},{"vendor":"arm","product":"cortex-m33_firmware"},{"vendor":"arm","product":"cortex-m35p_firmware"},{"vendor":"arm","product":"cortex-m55_firmware"}],"references":[{"url":"https://developer.arm.com/support/arm-security-updates","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://developer.arm.com/support/arm-security-updates/vlldm-instruction-security-vulnerability","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-35465"},{"url":"https://github.com/advisories/GHSA-2g78-x942-h8vj"}],"sources":{"cve":[{"id":"CVE-2021-35465","description":"Certain Arm products before 2021-08-23 do not properly consider the effect of exceptions on a VLLDM instruction. A Non-secure handler may have read or write access to part of a Secure context. This affects Arm Cortex-M33 r0p0 through r1p0, Arm Cortex-M35P r0, Arm Cortex-M55 r0p0 through r1p0, and Arm China STAR-MC1 (in the STAR SE configuration).","status":"published","published":"2021-08-23T12:44:08Z","modified":"2024-08-04T00:40:45.965Z","updated_at":"2026-11-02T14:33:09.864034Z"}],"euvd":[{"id":"EUVD-2021-22107","description":"Certain Arm products before 2021-08-23 do not properly consider the effect of exceptions on a VLLDM instruction. A Non-secure handler may have read or write access to part of a Secure context. This affects Arm Cortex-M33 r0p0 through r1p0, Arm Cortex-M35P r0, Arm Cortex-M55 r0p0 through r1p0, and Arm China STAR-MC1 (in the STAR SE configuration).","status":"published","published":"2021-08-23T12:44:08Z","modified":"2024-08-04T00:40:45Z","updated_at":"2026-11-03T03:24:30.441845Z"}],"ghsa":[{"id":"GHSA-2g78-x942-h8vj","title":"Certain Arm products before 2021-08-23 do not properly consider the effect of exceptions on a...","description":"Certain Arm products before 2021-08-23 do not properly consider the effect of exceptions on a VLLDM instruction. A Non-secure handler may have read or write access to part of a Secure context. This affects Arm Cortex-M33 r0p0 through r1p0, Arm Cortex-M35P r0, Arm Cortex-M55 r0p0 through r1p0, and Arm China STAR-MC1 (in the STAR SE configuration).","status":"published","published":"2022-05-24T19:11:54Z","modified":"2023-01-27T05:03:17Z","cvss":[{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N","level":"low"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:42:12.753514Z"}],"nvd":[{"id":"CVE-2021-35465","description":"Certain Arm products before 2021-08-23 do not properly consider the effect of exceptions on a VLLDM instruction. A Non-secure handler may have read or write access to part of a Secure context. This affects Arm Cortex-M33 r0p0 through r1p0, Arm Cortex-M35P r0, Arm Cortex-M55 r0p0 through r1p0, and Arm China STAR-MC1 (in the STAR SE configuration).","status":"published","published":"2021-08-23T13:15:07.667Z","modified":"2026-06-17T03:57:31.683Z","cvss":[{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N","level":"low","assessor":"primary"},{"version":"2.0","score":3.6,"vector":"AV:L/AC:L/Au:N/C:P/I:P/A:N","level":"low","assessor":"primary"}],"updated_at":"2026-11-02T14:06:57.318236Z"}]}}