CVE-2026-76891: Expired Pointer Dereference in Wireshark
Published Aug 19, 2026
·Updated
Crash in sharkd in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
Affected Software
1 affected component
Wireshark sharkd>=4.6.0<=4.6.7, >=4.4.0<=4.4.18
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 4.6.8
Event History
Aug 19, 2026
CVE Published
via MITRE·10:46 PM
Data Sourced
via MITRE·10:46 PM
RemedyDescriptionSeverityWeakness
Frequently Asked Questions
1
Which deployments are affected?
The issue affects sharkd in Wireshark versions 4.6.0 through 4.6.7 and 4.4.0 through 4.4.18.
2
What does an attacker need to do to exploit this?
The CVSS vector indicates network access, no privileges, high attack complexity, and user interaction are required. Successful exploitation can cause a denial of service through a crash.