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Wireshark CVE-2026-76923

| EUVDEUVD-2026-63158 MEDIUM
Out-of-bounds Read (CWE-125)
2026-08-19 GitLab GHSA-fqxv-r5x4-gvq7
Information Disclosure Buffer Overflow Denial Of Service Wireshark Red Hat Suse
5.5
CVSS 3.1 · Vendor: GitLab
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Severity by source

Vendor (GitLab) PRIMARY
5.5 MEDIUM
AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
vuln.today AI
5.5 MEDIUM

Local file-open or live-capture interaction required; crash produces complete availability loss with no confidentiality or integrity impact confirmed.

3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
4.0 AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SUSE
MEDIUM
qualitative
Red Hat
5.5 MEDIUM
qualitative

Primary rating from Vendor (GitLab).

CVSS VectorVendor: GitLab

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

3
Patch available
Aug 20, 2026 - 01:01 EUVD
Analysis Generated
Aug 19, 2026 - 23:26 vuln.today
CVE Published
Aug 19, 2026 - 22:45 cve.org
MEDIUM 5.5

DescriptionCVE.org

Bluetooth HFP Profile protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service

AnalysisAI

Denial of service in Wireshark's Bluetooth Hands-Free Profile (HFP) protocol dissector affects versions 4.6.0-4.6.7 and 4.4.0-4.4.18, causing application crashes via malformed HFP traffic or crafted capture files. The CWE-125 out-of-bounds read root cause is confirmed by NVD; CVSS impact is confined to availability (A:H, C:N, I:N), though tags include 'Information Disclosure' - a discrepancy unresolved from available data. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Craft malformed Bluetooth HFP capture file
Delivery
Deliver file to analyst via email or file share
Exploit
Analyst opens file in vulnerable Wireshark
Execution
HFP dissector performs out-of-bounds read
Impact
Wireshark process crashes (DoS)
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Vulnerability AssessmentAI

Exploitation Exploitation requires the target to be running Wireshark in one of the affected version ranges (4.6.0-4.6.7 or 4.4.0-4.4.18) with the Bluetooth HFP dissector active, which is the default in standard Wireshark installations. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 score of 5.5 (Medium) with vector AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H accurately reflects a constrained threat model: exploitation is local and requires user interaction, substantially limiting the attack surface compared to network-exploitable vulnerabilities. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker crafts a malformed Bluetooth HFP packet capture file (.pcapng or .pcap) embedding protocol fields with lengths that exceed allocated buffer boundaries, then delivers it to a target security analyst via email, file share, or download. When the analyst opens the file in a vulnerable Wireshark version, the HFP dissector's out-of-bounds read triggers an application crash, causing a denial of service. …
Remediation Upgrade Wireshark to the first release above the affected version ranges - above 4.6.7 for the 4.6.x branch or above 4.4.18 for the 4.4.x branch - per the vendor advisory at https://www.wireshark.org/security/wnpa-sec-2026-79.html. … Detailed patch versions, workarounds, and compensating controls in full report.
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Same weakness CWE-125 – Out-of-bounds Read

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CVE-2017-5030 HIGH POC
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CVE-2024-48456 HIGH POC
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CVE-2024-48457 HIGH POC
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Same technique Information Disclosure

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CVE-2019-2725 CRITICAL POC
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CVE-2021-34523 CRITICAL POC
9.0
CVE-2013-2251 CRITICAL POC
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CVE-2017-5638 CRITICAL POC
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CVE-2025-24813 CRITICAL POC
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CVE-2015-1701 HIGH POC
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CVE-2017-0147 HIGH POC
7.5
CVE-2014-6324 HIGH POC
8.8

Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise High Performance Computing 12 Affected
SUSE Linux Enterprise High Performance Computing 15 SP7 Affected
SUSE Linux Enterprise Module for Basesystem 15 SP7 Affected
SUSE Linux Enterprise Module for Desktop Applications 15 SP7 Affected

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CVE-2026-76923 vulnerability details – vuln.today
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