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Wireshark sharkd EUVDEUVD-2026-26311

| CVE-2026-7376 MEDIUM
NULL Pointer Dereference (CWE-476)
2026-04-30 GitLab
Null Pointer Dereference Denial Of Service Wireshark
5.5
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
5.5 MEDIUM
AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
SUSE
MEDIUM
qualitative
Red Hat
5.0 MEDIUM
qualitative

Primary rating from NVD.

CVSS VectorNVD

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

6
Patch released
May 01, 2026 - 18:59 nvd
Patch available
Patch available
Apr 30, 2026 - 07:01 EUVD
Analysis Generated
Apr 30, 2026 - 06:00 vuln.today
EUVD ID Assigned
Apr 30, 2026 - 05:30 euvd
EUVD-2026-26311
Analysis Generated
Apr 30, 2026 - 05:30 vuln.today
CVE Published
Apr 30, 2026 - 05:04 nvd
MEDIUM 5.5

DescriptionCVE.org

Crash in sharkd 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service

AnalysisAI

Null pointer dereference in Wireshark sharkd 4.4.0-4.4.14 and 4.6.0-4.6.4 causes denial of service when processing crafted input, crashing the daemon. Local attackers with low privileges can trigger the crash via user interaction, rendering the packet analysis service unavailable. No authentication required, and publicly available exploit code does not appear to exist at time of analysis.

Technical ContextAI

sharkd is the daemon component of Wireshark (CPE: cpe:2.3:a:wireshark_foundation:wireshark) that provides remote packet capture and analysis services. The vulnerability stems from a null pointer dereference (CWE-476), a memory safety flaw where the code attempts to dereference a pointer without first validating it is non-null. This is a classic crash vector in C/C++ applications. The attack vector is local (AV:L) and requires user interaction (UI:R), indicating the crash is triggered when a user or local process sends specific crafted input to sharkd-likely a malformed packet capture file, network traffic, or API request that causes the daemon to enter an error path without proper null-pointer checking.

RemediationAI

Upgrade Wireshark to a patched version released after the affected ranges (4.4.14 and 4.6.4 respectively); consult the Wireshark security advisory WNPA-SEC-2026-48 for exact fixed versions. If immediate upgrade is not feasible, restrict local access to the sharkd daemon to trusted users only by implementing filesystem and network ACLs on the sharkd service port and socket. Additionally, validate and sanitize all packet capture files and network input before sending them to sharkd, and consider disabling the sharkd service if not actively used. Workarounds are limited by the local-only nature of the vulnerability; the most effective mitigation is patching, as compensating controls primarily reduce exposure rather than eliminate the crash condition.

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Same weakness CWE-476 – 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

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: Medium
Product Status
openSUSE Tumbleweed Fixed
SUSE Linux Enterprise Desktop 15 SP7 Fixed
SUSE Linux Enterprise High Performance Computing 15 SP7 Fixed
SUSE Linux Enterprise Module for Basesystem 15 SP7 Fixed
SUSE Linux Enterprise Module for Desktop Applications 15 SP7 Fixed

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EUVD-2026-26311 vulnerability details – vuln.today
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