Vulnerability Database

309,961

Total vulnerabilities in the database

CVE-2021-3470

A heap overflow issue was found in Redis in versions before 5.0.10, before 6.0.9 and before 6.2.0 when using a heap allocator other than jemalloc or glibc's malloc, leading to potential out of bound write or process crash. Effectively this flaw does not affect the vast majority of users, who use jemalloc or glibc malloc.

  • Published: Mar 31, 2021
  • Updated: Nov 16, 2025
  • CVE: CVE-2021-3470
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 5.3
  • AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CVSS v2:

  • Severity: Medium
  • Score: 5
  • AV:N/AC:L/Au:N/C:N/I:N/A:P

CWEs:

Software From Fixed in
redislabs / redis - 5.0.10
redislabs / redis 6.0.0 6.0.9
redislabs / redis 6.2.0-rc3 6.2.0-rc3.x
redislabs / redis 6.2.0-rc2 6.2.0-rc2.x
redislabs / redis 6.2.0-rc1 6.2.0-rc1.x