Vulnerability Details : CVE-2021-35465
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).
Products affected by CVE-2021-35465
- cpe:2.3:o:arm:cortex-m33_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:arm:cortex-m55_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:arm:china_star-mc1_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:arm:cortex-m35p_firmware:r0:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-35465
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 19 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-35465
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
3.6
|
LOW | AV:L/AC:L/Au:N/C:P/I:P/A:N |
3.9
|
4.9
|
NIST | |
3.4
|
LOW | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N |
0.8
|
2.5
|
NIST |
References for CVE-2021-35465
-
https://developer.arm.com/support/arm-security-updates
Arm Security Updates – Arm DeveloperVendor Advisory
-
https://developer.arm.com/support/arm-security-updates/vlldm-instruction-security-vulnerability
Arm Security Updates | VLLDM instruction Security Vulnerability – Arm DeveloperVendor Advisory
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