Out-of-bounds read in Wireshark - CVE-2026-3203

Vulnerability identifier: #VU123278

CSH Severity: Medium

CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-3203

CWE-ID: CWE-125

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in the RF4CE Profile protocol dissector. A remote attacker can create a specially crafted packet trace file, trick the victim into opening it, trigger an out-of-bounds read error and cause a denial of service condition on the system.

Wireshark
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support
Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support
Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for x86_64
Server Applications Module
Desktop Applications Module
Basesystem Module
openEuler
Anolis OS
Fedora
wireshark (Red Hat package)
wireshark-cli
wireshark-doc
wireshark-devel
wireshark
wireshark-debugsource
wireshark-help
wireshark-debuginfo
libwiretap16-debuginfo
libwsutil17-debuginfo
wireshark-ui-qt-debuginfo
wireshark-ui-qt
libwsutil17
libwireshark19-debuginfo
libwireshark19
libwiretap16
libvirt-daemon-proxy-debuginfo
libvirt-daemon-driver-interface-debuginfo
libvirt-daemon-driver-storage-iscsi-debuginfo
libvirt-daemon-common
libvirt-daemon-driver-interface
libvirt-daemon-qemu
libvirt-daemon-driver-storage-iscsi
libvirt-daemon-driver-storage-scsi-debuginfo
libvirt-client-qemu
libvirt-daemon-driver-storage-logical-debuginfo
libvirt-daemon-driver-nodedev-debuginfo
libvirt-daemon-plugin-sanlock-debuginfo
libvirt-daemon-driver-storage-disk
libvirt-daemon-plugin-lockd-debuginfo
libvirt-daemon-driver-network-debuginfo
libvirt-daemon-driver-network
libvirt-daemon-hooks
libvirt-daemon-log
libvirt-daemon-driver-storage
libvirt-daemon-common-debuginfo
libvirt-daemon-driver-qemu-debuginfo
libvirt-client-debuginfo
libvirt-daemon-plugin-sanlock
libvirt-daemon
libvirt-daemon-driver-storage-rbd
libvirt-daemon-driver-storage-rbd-debuginfo
libvirt-doc
libvirt-daemon-xen
libvirt-daemon-driver-libxl-debuginfo
libvirt-daemon-driver-libxl
libvirt-daemon-driver-storage-iscsi-direct
libvirt-debugsource
libvirt-libs
libvirt-libs-debuginfo
libvirt-daemon-driver-storage-core
libvirt-daemon-config-nwfilter
libvirt-daemon-driver-nwfilter-debuginfo
libvirt-daemon-proxy
libvirt-daemon-lock-debuginfo
libvirt-daemon-driver-storage-mpath
libvirt-nss
libvirt-client
libvirt
libvirt-daemon-driver-secret-debuginfo
libvirt-daemon-driver-storage-core-debuginfo
libvirt-daemon-lock
libvirt-daemon-config-network
libvirt-daemon-debuginfo
libvirt-daemon-driver-nodedev
libvirt-daemon-driver-secret
libvirt-nss-debuginfo
libvirt-daemon-driver-qemu
libvirt-daemon-driver-storage-disk-debuginfo
libvirt-daemon-driver-storage-iscsi-direct-debuginfo
libvirt-daemon-plugin-lockd
libvirt-daemon-log-debuginfo
libvirt-daemon-driver-storage-logical
libvirt-daemon-driver-nwfilter
libvirt-daemon-driver-storage-scsi
libvirt-daemon-driver-storage-mpath-debuginfo
libvirt-devel

Install updates from vendor's website.

Wireshark - addressed in versions 4.4.14, 4.6.4
wireshark (Red Hat package) - addressed in versions 4.4.2-3.el10_0.4, 4.4.2-4.el10_1.4
wireshark-cli - update to 4.4.9-6
wireshark-doc - update to 4.4.9-6
wireshark-devel - update to 4.4.9-6
wireshark - update to 4.4.9-6
wireshark-debugsource - update to 4.4.14-1
wireshark - update to 4.4.14-1
wireshark-help - update to 4.4.14-1
wireshark-devel - update to 4.4.14-1
wireshark-debuginfo - update to 4.4.14-1
wireshark - addressed in versions 4.6.4-1.fc44, 4.6.4-2.fc44
libwiretap16-debuginfo - update to 4.6.4-150700.21.8.1
libwsutil17-debuginfo - update to 4.6.4-150700.21.8.1
wireshark-devel - update to 4.6.4-150700.21.8.1
wireshark-ui-qt-debuginfo - update to 4.6.4-150700.21.8.1
wireshark-ui-qt - update to 4.6.4-150700.21.8.1
libwsutil17 - update to 4.6.4-150700.21.8.1
libwireshark19-debuginfo - update to 4.6.4-150700.21.8.1
wireshark-debugsource - update to 4.6.4-150700.21.8.1
wireshark - update to 4.6.4-150700.21.8.1
libwireshark19 - update to 4.6.4-150700.21.8.1
libwiretap16 - update to 4.6.4-150700.21.8.1
wireshark-debuginfo - update to 4.6.4-150700.21.8.1
libvirt-daemon-proxy-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-interface-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-iscsi-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-common - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-interface - update to 11.0.0-150700.4.19.1
libvirt-daemon-qemu - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-iscsi - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-scsi-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-client-qemu - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-logical-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-nodedev-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-plugin-sanlock-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-disk - update to 11.0.0-150700.4.19.1
libvirt-daemon-plugin-lockd-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-network-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-network - update to 11.0.0-150700.4.19.1
libvirt-daemon-hooks - update to 11.0.0-150700.4.19.1
libvirt-daemon-log - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage - update to 11.0.0-150700.4.19.1
libvirt-daemon-common-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-qemu-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-client-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-plugin-sanlock - update to 11.0.0-150700.4.19.1
libvirt-daemon - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-rbd - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-rbd-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-doc - update to 11.0.0-150700.4.19.1
libvirt-daemon-xen - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-libxl-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-libxl - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-iscsi-direct - update to 11.0.0-150700.4.19.1
libvirt-debugsource - update to 11.0.0-150700.4.19.1
libvirt-libs - update to 11.0.0-150700.4.19.1
libvirt-libs-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-core - update to 11.0.0-150700.4.19.1
libvirt-daemon-config-nwfilter - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-nwfilter-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-proxy - update to 11.0.0-150700.4.19.1
libvirt-daemon-lock-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-mpath - update to 11.0.0-150700.4.19.1
libvirt-nss - update to 11.0.0-150700.4.19.1
libvirt-client - update to 11.0.0-150700.4.19.1
libvirt - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-secret-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-core-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-lock - update to 11.0.0-150700.4.19.1
libvirt-daemon-config-network - update to 11.0.0-150700.4.19.1
libvirt-daemon-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-nodedev - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-secret - update to 11.0.0-150700.4.19.1
libvirt-nss-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-qemu - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-disk-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-iscsi-direct-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-plugin-lockd - update to 11.0.0-150700.4.19.1
libvirt-daemon-log-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-logical - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-nwfilter - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-scsi - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-mpath-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-devel - update to 11.0.0-150700.4.19.1

• https://www.wireshark.org/security/wnpa-sec-2026-07.html

• Multiple vulnerabilities in Wireshark
• Anolis OS update for wireshark
• Fedora 44 update for wireshark
• openEuler 24.03 LTS SP2 update for wireshark
• openEuler 24.03 LTS SP1 update for wireshark
• openEuler 24.03 LTS update for wireshark
• openEuler 22.03 LTS SP4 update for wireshark
• openEuler 24.03 LTS SP3 update for wireshark
• Fedora 44 update for wireshark
• SUSE update for wireshark
• Red Hat Enterprise Linux 10 update for wireshark
• Red Hat Enterprise Linux 10 update for wireshark