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Wireshark CVE-2026-19694

| EUVDEUVD-2026-57745 MEDIUM
Heap-based Buffer Overflow (CWE-122)
2026-08-13 GitLab GHSA-qq24-2w7c-56vq
Heap Overflow Denial Of Service Buffer Overflow Wireshark
5.5
CVSS 3.1 · NVD
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Severity by source

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

Local vector and user interaction required because victim must open a crafted file; high complexity for reliable heap overflow triggering; no confidentiality or integrity impact, only application crash.

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

Primary rating from Vendor (GitLab).

CVSS VectorNVD

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

4
CVSS changed
Sep 01, 2026 - 14:52 NVD
4.7 (MEDIUM) 5.5 (MEDIUM)
Patch available
Aug 13, 2026 - 09:15 EUVD
Analysis Generated
Aug 13, 2026 - 09:06 vuln.today
CVE Published
Aug 13, 2026 - 08:04 cve.org
MEDIUM 4.7

DescriptionNVD

TTX Logger file parser crash in 4.6.0 to 4.6.7 allows denial of service

AnalysisAI

Heap-based buffer overflow in Wireshark's TTX Logger file parser affects versions 4.6.0 through 4.6.7, causing application crashes and denial of service when a user opens a specially crafted TTX Logger file. The vulnerability is rooted in CWE-122 (Heap-based Buffer Overflow) and is classified as medium severity with a CVSS score of 4.7. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Persist
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires that the victim is running Wireshark version 4.6.0 through 4.6.7 and actively opens a specially crafted TTX Logger file. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 base score of 4.7 (Medium) accurately reflects the constrained real-world risk of this vulnerability. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation The primary remediation is to upgrade Wireshark to a version beyond 4.6.7, as detailed in the Wireshark Foundation security advisory at https://www.wireshark.org/security/wnpa-sec-2026-68.html - consult the advisory for the exact patched release version, as it was not independently confirmed in the available input data. … 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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7.8
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7.8

Same technique Heap Overflow

View all
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7.8
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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 Not-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-2026-19694 vulnerability details – vuln.today
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