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Wireshark CVE-2026-76917

| EUVDEUVD-2026-63175 MEDIUM
Heap-based Buffer Overflow (CWE-122)
2026-08-19 GitLab GHSA-x2ff-jvpc-h94m
Heap Overflow Denial Of Service Buffer Overflow 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-based trigger with mandatory user interaction; no privileges needed; impact confined to availability via crash, no confidentiality or integrity loss.

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

2
Patch available
Aug 20, 2026 - 01:01 EUVD
Analysis Generated
Aug 19, 2026 - 23:28 vuln.today

DescriptionCVE.org

Bluetooth AVRCP 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

Heap-based buffer overflow in Wireshark's Bluetooth AVRCP protocol dissector crashes the application when processing malformed AVRCP packets, enabling denial of service against versions 4.6.0-4.6.7 and 4.4.0-4.4.18. The CVSS vector (AV:L/UI:R) indicates the attack requires a user to open or process a crafted packet capture file - this is not a remotely triggerable crash but a file-based DoS vector typical of Wireshark dissector flaws. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Craft malformed AVRCP Bluetooth packets
Delivery
Embed packets in capture file
Exploit
Deliver file to analyst via social engineering
Execution
Analyst opens file in vulnerable Wireshark
Persist
Heap overflow triggered in AVRCP dissector
Impact
Wireshark process crashes (DoS)
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Vulnerability AssessmentAI

Exploitation The user must actively open or initiate processing of a crafted packet capture file (e.g., .pcap, .pcapng) or receive malformed AVRCP packets during a live Bluetooth capture session within Wireshark. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment Real-world risk is moderate-to-low. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker crafts a .pcapng file containing malformed Bluetooth AVRCP packets designed to trigger the heap overflow in Wireshark's dissector. The file is delivered to a security analyst or network engineer via email attachment or file share under a plausible pretext (e.g., a 'suspicious Bluetooth capture for analysis'). …
Remediation Users should upgrade to the patched release per the Wireshark Foundation's advisory wnpa-sec-2026-91 at https://www.wireshark.org/security/wnpa-sec-2026-91.html; the advisory provides confirmed fix versions for both the 4.6.x and 4.4.x branches. … Detailed patch versions, workarounds, and compensating controls in full report.
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Same weakness CWE-122 – Heap-based Buffer Overflow

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Same technique Heap Overflow

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9.8
CVE-2025-5419 HIGH POC
8.8
CVE-2026-53362 HIGH POC
7.8
CVE-2025-21418 HIGH
7.8
CVE-2023-23376 HIGH
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CVE-2024-30085 HIGH POC
7.8
CVE-2023-6246 HIGH POC
8.4

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-2026-76917 vulnerability details – vuln.today
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