Vulnerability Database

313,825

Total vulnerabilities in the database

CVE-2021-39923

Large loop in the PNRP dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file

  • Published: Nov 19, 2021
  • Updated: Nov 16, 2025
  • CVE: CVE-2021-39923
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 7.5
  • AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2:

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

CWEs:

Software From Fixed in
wireshark / wireshark 3.2.0 3.2.17.x
wireshark / wireshark 3.4.0 3.4.9.x
debian / debian_linux 10.0 10.0.x
debian / debian_linux 11.0 11.0.x
debian / debian_linux 9.0 9.0.x