CVE-2026-76888: Heap-based Buffer Overflow in Wireshark
Published Aug 19, 2026
·Updated
RDP 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
Wiresharkto a version that resolves this vulnerability.Fixed in 4.6.8
Event History
Aug 19, 2026
CVE Published
via MITRE·10:35 PM
Data Sourced
via MITRE·10:35 PM
RemedyDescriptionSeverityWeakness
Frequently Asked Questions
1
Who is exposed to this denial-of-service issue?
Users running Wireshark versions 4.6.0 through 4.6.7 or 4.4.0 through 4.4.18 are affected when processing RDP protocol traffic or captures that trigger the vulnerable dissector.
2
What does exploitation require?
The CVSS vector indicates network reachability, high attack complexity, no required privileges, and user interaction. Successful exploitation causes a crash, resulting in limited availability impact; no confidentiality or integrity impact is identified.