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Vulnerability Details CVE-2021-27431

ARM CMSIS RTOS2 versions prior to 2.1.3 are vulnerable to integer wrap-around inosRtxMemoryAlloc (local malloc equivalent) function, which can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or injected code execution.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 64.5%
CVSS Severity
CVSS v3 Score 7.3
CVSS v2 Score 7.5
Products affected by CVE-2021-27431
  • Arm » Cmsis-Rtos » Version: 2.0.0
    cpe:2.3:o:arm:cmsis-rtos:2.0.0
  • Arm » Cmsis-Rtos » Version: 2.1.0
    cpe:2.3:o:arm:cmsis-rtos:2.1.0
  • Arm » Cmsis-Rtos » Version: 2.1.1
    cpe:2.3:o:arm:cmsis-rtos:2.1.1
  • Arm » Cmsis-Rtos » Version: 2.1.2
    cpe:2.3:o:arm:cmsis-rtos:2.1.2
  • Arm » Cmsis-Rtos » Version: 2.1.3
    cpe:2.3:o:arm:cmsis-rtos:2.1.3


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