CVE-2026-76927: NULL Pointer Dereference in Wireshark
Published Aug 19, 2026
·Updated
H.245 protocol dissector crash 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 Wireshark>=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·11:00 PM
Data Sourced
via MITRE·11:00 PM
RemedyDescriptionSeverityWeakness
Frequently Asked Questions
1
What must an attacker do to trigger the crash?
The attack requires local access, high attack complexity, and user interaction. The disclosed impact is denial of service through a crash in the H.245 protocol dissector.
2
Which Wireshark releases are affected?
Affected versions are Wireshark 4.6.0 through 4.6.7 and 4.4.0 through 4.4.18.
3
What is the security impact?
Successful exploitation can cause Wireshark to crash, resulting in denial of service. The provided vector indicates no confidentiality or integrity impact.