Wireshark RDP dissector crash 4.4.0-4.4.18 / 4.6.0-4.6.7 (DoS)
CVE-2026-76888 Published on August 19, 2026
Heap-based Buffer Overflow in Wireshark
RDP protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
Vulnerability Analysis
CVE-2026-76888 is exploitable with network access, requires user interaction. This vulnerability is consided to have a high level of attack complexity. Public availability of a proof of concept (POC) exploit exists for CVE-2026-76888. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a small impact on availability.
Weakness Type
Heap-based Buffer Overflow
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
Products Associated with CVE-2026-76888
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Affected Versions
Wireshark Foundation Wireshark:- Version 4.6.0 and below 4.6.8 is affected.
- Version 4.4.0 and below 4.4.18 is affected.