CVE-2026-19694
wireshark: Heap-based Buffer Overflow in Wireshark
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · August 13, 2026
Updated · September 2, 2026
Description
A flaw was found in the TTX Logger file parser in Wireshark. This issue occurs when malformed packets are decoded from a packet capture file, causing a heap-based buffer overflow, resulting in a denial of service.
Statement
This issue will cause a crash in Wireshark, with no evidence of arbitrary code execution. This vulnerability can only be exploited when a malformed packet capture file is processed. Due to these reasons, this flaw has been rated with a moderate severity.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 6.6CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
CWE-122 · Heap-based Buffer Overflow