Vulnerability Database

309,130

Total vulnerabilities in the database

CVE-2021-27427

RIOT OS version 2020.01.1 is vulnerable to integer wrap-around in its implementation of calloc function, which can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution.

  • Published: May 3, 2022
  • Updated: Nov 16, 2025
  • CVE: CVE-2021-27427
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 7.3
  • AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS v2:

  • Severity: High
  • Score: 7.5
  • AV:N/AC:L/Au:N/C:P/I:P/A:P

CWEs:

Software From Fixed in
riot-os / riot 2020.01.1 2020.01.1.x