Vulnerability Database

309,961

Total vulnerabilities in the database

CVE-2020-14363

An integer overflow vulnerability leading to a double-free was found in libX11. This flaw allows a local privileged attacker to cause an application compiled with libX11 to crash, or in some cases, result in arbitrary code execution. The highest threat from this flaw is to confidentiality, integrity as well as system availability.

  • Published: Sep 11, 2020
  • Updated: Nov 16, 2025
  • CVE: CVE-2020-14363
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 7.8
  • AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2:

  • Severity: Low
  • Score: 4.6
  • AV:L/AC:L/Au:N/C:P/I:P/A:P

CWEs:

Software From Fixed in
x.org / libx11 - 1.6.12
fedoraproject / fedora 33 33.x