CVE-2018-25426: Winmtr

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

WinMTR 0.91 contains a denial of service vulnerability that allows attackers to crash the application by sending a malformed payload file containing a large buffer of repeated characters. Attackers can create a specially crafted input file with 238 bytes of data to trigger a buffer overflow condition that causes the application to crash.

Affected products

• Winmtr Winmtr: version 0.91 only

Published 2026-05-30. Last modified 2026-10-06.