CVE-2026-76919

Analyzed Analyzed - Analysis Complete

ESS Protocol Dissector DoS in Wireshark

Publication date: 2026-08-19

Last updated on: 2026-08-31

Assigner: GitLab Inc.

Description

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

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-08-19

Last Modified

2026-08-31

Generated

2026-09-09

AI Q&A

2026-08-20

EPSS Evaluated

2026-09-07

NVD

CVE-2026-76919

EUVD

EUVD-2026-63173

Affected Vendors & Products

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

KEV

CWE ID	Description
CWE-457	The code uses a variable that has not been initialized, leading to unpredictable or unintended results.

Attack-Flow Graph

Executive Summary

This vulnerability is a denial of service issue in the ESS 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 is related to an ESS protocol dissector crash in specific Wireshark versions (4.6.0 to 4.6.7 and 4.4.0 to 4.4.18). To detect it, check if your Wireshark version falls within these ranges. Use commands like 'wireshark --version' to verify. If affected, update to a patched version immediately.

Impact Analysis

The vulnerability can lead to service unavailability if exploited, potentially disrupting network traffic analysis or security monitoring tools relying on the affected dissector.

Compliance Impact

This vulnerability causes a denial of service due to an ESS protocol dissector crash. It does not directly affect compliance with GDPR or HIPAA as it does not involve data breaches or unauthorized access. However, service disruption could impact availability requirements under these regulations.

Mitigation Strategies

Update Wireshark to a version outside the affected range (4.6.0 to 4.6.7 and 4.4.0 to 4.4.18) to address the ESS protocol dissector crash vulnerability.

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