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Wireshark CVE-2026-76922

| EUVDEUVD-2026-63157 MEDIUM
NULL Pointer Dereference (CWE-476)
2026-08-19 GitLab GHSA-gf7g-v66m-whq2
Null Pointer Dereference Denial Of Service Wireshark 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

File-based crash requires local user interaction to open a crafted pcap (AV:L, UI:R, PR:N); impact is application-level DoS only, with no confidentiality or integrity consequence.

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

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 - 23:27 vuln.today
CVE Published
Aug 19, 2026 - 22:45 cve.org
MEDIUM 5.5

DescriptionCVE.org

Bluetooth BR/EDR FHS protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service

AnalysisAI

Wireshark's Bluetooth BR/EDR FHS protocol dissector crashes via a NULL pointer dereference (CWE-476) when processing a malformed packet capture, affecting the 4.6.x branch (4.6.0-4.6.7) and the 4.4.x branch (4.4.0-4.4.18). An attacker who can persuade a user to open a specially crafted capture file can crash the Wireshark process, resulting in an application-level denial of service with no confidentiality or integrity impact. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Craft malformed Bluetooth BR/EDR FHS pcap
Delivery
Deliver file to analyst via email or file share
Exploit
Victim opens file in affected Wireshark version
Execution
NULL pointer dereference triggered in FHS dissector
Impact
Wireshark process crashes
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Vulnerability AssessmentAI

Exploitation Exploitation requires that the victim is running an affected Wireshark version (4.6.0-4.6.7 or 4.4.0-4.4.18) and actively opens a packet capture file containing a specially crafted, malformed Bluetooth BR/EDR FHS packet - directly reflected in CVSS metrics AV:L (file/local-access vector) and UI:R (user interaction required). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 score of 5.5 (Medium) accurately captures the constrained threat model: AV:L and UI:R together mean no remote exploitation path exists against a live Wireshark session - the attacker must first get the victim to open a crafted pcap file, a social-engineering dependency that significantly raises the practical bar. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker crafts a Bluetooth BR/EDR capture file containing a malformed FHS packet and delivers it to a network analyst or security engineer via email attachment or a shared file repository. When the victim opens the file in an affected Wireshark version, the FHS dissector dereferences a null pointer and the application crashes, interrupting any in-progress analysis session. …
Remediation Upgrade Wireshark to a release beyond the affected version ranges in the relevant branch - above 4.6.7 in the 4.6.x series or above 4.4.18 in the 4.4.x series - per the vendor advisory at https://www.wireshark.org/security/wnpa-sec-2026-80.html. … Detailed patch versions, workarounds, and compensating controls in full report.
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Same weakness CWE-476 – NULL Pointer Dereference

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7.5
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Same technique Null Pointer Dereference

View all
CVE-2016-0742 HIGH
7.5
CVE-2014-3470 MEDIUM
4.3
CVE-2017-3730 HIGH POC
7.5
CVE-2017-3169 CRITICAL POC
9.8
CVE-2016-4957 HIGH
7.5
CVE-2015-3194 HIGH
7.5
CVE-2026-21525 MEDIUM
6.2
CVE-2017-0016 MEDIUM
5.9

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-2026-76922 vulnerability details – vuln.today
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