CVE-2025-9817 HIGH

CVE-2025-9817: NULL Pointer Dereference in Wireshark

Vendor Wireshark Foundation
Product Wireshark
Weakness CWE-476
Published September 3, 2025
Last update March 27, 2026
View on NVD All CVEs

CVSS base score

7.8/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

SSH dissector crash in Wireshark 4.4.0 to 4.4.8 allows denial of service

Key dates

02Disclosure timeline

September 3, 2025 CVE published
March 27, 2026 Record updated