PT-2026-78847

CVE-2026-76886

Published

2026-07-25

Updated

2026-10-27

Description by

CVSS 3.1

9.8

Critical

MetricsAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Wireshark versions 4.6.0 through 4.6.7 Wireshark versions 4.4.0 through 4.4.18

Description A heap-based buffer overflow in the C12.22 protocol dissector can lead to a crash, resulting in a denial of service. A dissector is a software component that breaks down network packets into a human-readable format.

Recommendations Update Wireshark versions 4.6.0 through 4.6.7 to a version newer than 4.6.7. Update Wireshark versions 4.4.0 through 4.4.18 to a version newer than 4.4.18.

Exploitability

Exploit

Fix

Impacts

Researchers

Vendors

Affected products

Weakness enumeration

CWE-122: Heap-based Buffer Overflow

CWE-190: Integer Overflow or Wraparound

Related identifiers

CVE-2026-76886