CVE-2026-76888
Analyzed Analyzed - Analysis Complete

RDP Protocol Dissector Crash in Wireshark

Publication date: 2026-08-19

Last updated on: 2026-08-28

Assigner: GitLab Inc.

Description
RDP protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service

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Meta Information

Published
2026-08-19
Last Modified
2026-08-28
Generated
2026-09-09
AI Q&A
2026-08-20
EPSS Evaluated
2026-09-07
NVD
CVE-2026-76888
EUVD
EUVD-2026-63144

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
wireshark wireshark From 4.6.0 (inc) to 4.6.8 (exc)
wireshark wireshark From 4.4.0 (inc) to 4.4.18 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-122 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().

Attack-Flow Graph

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Executive Summary

This vulnerability is a denial of service issue in the RDP protocol dissector affecting versions 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18. It allows an attacker to crash the dissector, causing a service disruption.

Detection Guidance

This vulnerability causes an RDP protocol dissector crash leading to denial of service. Detection may involve monitoring for crashes in network protocol analyzers like Wireshark when processing RDP traffic. Check for application logs indicating dissector failures during RDP packet analysis.

Impact Analysis

The vulnerability could allow an attacker to cause a denial of service by crashing the RDP protocol dissector, potentially disrupting remote desktop services.

Compliance Impact

This vulnerability causes a denial of service via RDP protocol dissector crash, which may disrupt system availability. Compliance impacts depend on affected systems' roles but could affect data processing integrity under GDPR or service continuity under HIPAA if critical systems are impacted.

Mitigation Strategies

Update the affected RDP protocol dissector to a version outside the vulnerable range (4.6.0 to 4.6.7 or 4.4.0 to 4.4.18).

Monitor network traffic for unusual RDP protocol activity that may indicate exploitation attempts.

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