Skip to main content

Wireshark EUVDEUVD-2026-26332

| CVE-2026-6524 MEDIUM
Access of Uninitialized Pointer (CWE-824)
2026-04-30 GitLab
Denial Of Service Memory Corruption Red Hat Wireshark Suse Wireshark Foundation
5.5
CVSS 3.1 · NVD
Share

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
6.5 MEDIUM
qualitative

Primary rating from NVD.

CVSS VectorNVD

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 - 19:27 nvd
Patch available
Patch available
Apr 30, 2026 - 08:16 EUVD
Analysis Generated
Apr 30, 2026 - 06:46 vuln.today
EUVD ID Assigned
Apr 30, 2026 - 06:30 euvd
EUVD-2026-26332
Analysis Generated
Apr 30, 2026 - 06:30 vuln.today
CVE Published
Apr 30, 2026 - 05:34 nvd
MEDIUM 5.5

DescriptionCVE.org

MySQL protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service

AnalysisAI

Denial of service via MySQL protocol dissector crash in Wireshark 4.6.0-4.6.4 and 4.4.0-4.4.14 allows local users with no privileges to crash the application through a crafted malicious pcap file or network capture, requiring only user interaction to open the file. The vulnerability stems from improper memory access in the MySQL dissector parser (CWE-824: Access of Uninitialized Pointer), resulting in application termination and loss of packet analysis capability. No public exploit code or active exploitation has been identified at time of analysis.

Technical ContextAI

Wireshark's protocol dissectors parse network traffic across hundreds of protocols for real-time and forensic analysis. The MySQL dissector is responsible for decoding MySQL protocol frames within captured packets. CWE-824 (Access of Uninitialized Pointer) indicates the dissector attempts to dereference a pointer variable that was never properly initialized, likely during parsing of specific MySQL frame structures. When a specially crafted MySQL protocol packet is processed, the uninitialized pointer is dereferenced, triggering a memory access violation (segmentation fault) that terminates the dissector and crashes the Wireshark application. The vulnerability affects versions 4.6.0 through 4.6.4 (current 4.6.x line) and 4.4.0 through 4.4.14 (legacy 4.4.x line), with CPE identifying all Wireshark Foundation releases within these ranges.

RemediationAI

Upgrade to Wireshark version 4.6.5 or later (for 4.6.x users) or 4.4.15 or later (for 4.4.x users) to patch the MySQL dissector pointer initialization flaw. The patch is available from the Wireshark Foundation download page and integrated into all subsequent releases. If immediate upgrade is not feasible, disable the MySQL dissector via Wireshark's Protocol Preferences (Edit → Preferences → Protocols → MySQL, uncheck 'Enabled') to prevent parsing of MySQL frames and block the crash vector; this workaround sacrifices MySQL protocol visibility but eliminates denial-of-service risk. For teams processing untrusted pcap files in automated pipelines, implement file validation and sandboxing: restrict Wireshark execution to isolated systems, validate pcap file headers before processing, and avoid opening pcaps from untrusted sources. Monitor Wireshark application logs for segmentation faults or crashes during pcap analysis as an indicator of exploitation attempts.

More in Wireshark

View all
CVE-2014-2299 CRITICAL POC
9.3 Mar 11

Buffer overflow in the mpeg_read function in wiretap/mpeg.c in the MPEG parser in Wireshark 1.8.x before 1.8.13 and 1.10
CVE-2013-4074 MEDIUM POC
5.0 Jun 09

The dissect_capwap_data function in epan/dissectors/packet-capwap.c in the CAPWAP dissector in Wireshark 1.6.x before 1.
CVE-2018-6836 CRITICAL POC
9.8 Feb 08

The netmonrec_comment_destroy function in wiretap/netmon.c in Wireshark through 2.4.4 performs a free operation on an un
CVE-2014-4174 CRITICAL POC
9.3 Jun 18

wiretap/libpcap.c in the libpcap file parser in Wireshark 1.10.x before 1.10.4 allows remote attackers to execute arbitr
CVE-2017-9353 HIGH POC
7.5 Jun 02

In Wireshark 2.2.0 to 2.2.6, the IPv6 dissector could crash. Rated high severity (CVSS 7.5), this vulnerability is remot
CVE-2017-17085 HIGH POC
7.5 Dec 01

In Wireshark 2.4.0 to 2.4.2 and 2.2.0 to 2.2.10, the CIP Safety dissector could crash. Rated high severity (CVSS 7.5), t
CVE-2017-9347 HIGH POC
7.5 Jun 02

In Wireshark 2.2.0 to 2.2.6, the ROS dissector could crash with a NULL pointer dereference. Rated high severity (CVSS 7.
CVE-2025-5601 HIGH POC
7.8 Jun 04

A denial of service vulnerability in Column handling crashes in Wireshark 4.4.0 to 4.4.6 and 4.2.0 to 4.2.12 (CVSS 7.8)

CVE-2023-4513 HIGH POC
7.5 Aug 24

BT SDP dissector memory leak in Wireshark 4.0.0 to 4.0.7 and 3.6.0 to 3.6.15 allows denial of service via packet injecti
CVE-2023-4512 HIGH POC
7.5 Aug 24

CBOR dissector crash in Wireshark 4.0.0 to 4.0.6 allows denial of service via packet injection or crafted capture file.

CVE-2023-2879 HIGH POC
7.5 May 26

GDSDB infinite loop in Wireshark 4.0.0 to 4.0.5 and 3.6.0 to 3.6.13 allows denial of service via packet injection or cra
CVE-2023-1992 HIGH POC
7.5 Apr 12

RPCoRDMA dissector crash in Wireshark 4.0.0 to 4.0.4 and 3.6.0 to 3.6.12 allows denial of service via packet injection o

Same weakness CWE-824 – Access of Uninitialized Pointer

View all
CVE-2015-1770 HIGH
8.8
CVE-2016-4343 HIGH POC
8.8
CVE-2020-25573 CRITICAL POC
9.8
CVE-2018-11743 CRITICAL POC
9.8
CVE-2018-9948 MEDIUM POC
6.5
CVE-2018-19857 CRITICAL POC
9.1
CVE-2018-3842 HIGH POC
8.8
CVE-2026-67281 HIGH POC
8.7

Same technique Denial Of Service

View all
CVE-2015-5119 CRITICAL POC
9.8
CVE-2011-2462 CRITICAL POC
9.8
CVE-2011-0611 HIGH POC
8.8
CVE-2012-1889 HIGH POC
8.8
CVE-2012-0507 CRITICAL POC
9.8
CVE-2014-1761 HIGH POC
7.8
CVE-2015-5122 CRITICAL POC
9.8
CVE-2011-0609 HIGH POC
7.8

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

Share

EUVD-2026-26332 vulnerability details – vuln.today
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy