Heap-based buffer overflow in Wireshark - CVE-2026-5653
Published: April 30, 2026
Vulnerability identifier: #VU128550
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-2026-5653
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in the DCP-ETSI protocol dissector. A remote attacker can trick a victim to open a specially crafted packet trace file, trigger a heap-based buffer overflow and cause a denial of service condition on the target system.
Affected software
Wireshark
How to mitigate CVE-2026-5653
Install updates from vendor's website.
Wireshark - addressed in versions 4.4.15, 4.6.5