Vulnerability Database

308,820

Total vulnerabilities in the database

CVE-2019-19334

In all versions of libyang before 1.0-r5, a stack-based buffer overflow was discovered in the way libyang parses YANG files with a leaf of type "identityref". An application that uses libyang to parse untrusted YANG files may be vulnerable to this flaw, which would allow an attacker to cause a denial of service or possibly gain code execution.

  • Published: Dec 6, 2019
  • Updated: Nov 9, 2025
  • CVE: CVE-2019-19334
  • Severity: Critical
  • Exploit:

CVSS v3:

  • Severity: Critical
  • Score: 9.8
  • AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2:

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

CWEs:

Software From Fixed in
cesnet / libyang 1.0-r1 1.0-r1.x
cesnet / libyang 1.0-r2 1.0-r2.x
cesnet / libyang 1.0-r3 1.0-r3.x
cesnet / libyang 1.0-r4 1.0-r4.x
cesnet / libyang 0.16-r1 0.16-r1.x
cesnet / libyang 0.16-r2 0.16-r2.x
cesnet / libyang 0.16-r3 0.16-r3.x
cesnet / libyang 0.13-r1 0.13-r1.x
cesnet / libyang 0.13-r2 0.13-r2.x
cesnet / libyang 0.12-r1 0.12-r1.x
cesnet / libyang 0.12-r2 0.12-r2.x
cesnet / libyang 0.11-r1 0.11-r1.x
cesnet / libyang 0.11-r2 0.11-r2.x
cesnet / libyang 0.14-r1 0.14-r1.x
cesnet / libyang 0.15-r1 0.15-r1.x
redhat / enterprise_linux 8.0 8.0.x
fedoraproject / fedora 31 31.x