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Description

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.

PUBLISHED Reserved 2026-05-30 | Published 2026-05-30 | Updated 2026-06-01 | Assigner VulnCheck




HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Product status

0.91
affected

Credits

Ihsan Sencan finder

References

www.exploit-db.com/exploits/45769 (ExploitDB-45769) exploit

winmtr.net (Official Product Homepage) product

winmtr.net/winmtr_download/ (Product Reference) product

www.vulncheck.com/...r-denial-of-service-via-buffer-overflow (VulnCheck Advisory: WinMTR 0.91 Denial of Service via Buffer Overflow) third-party-advisory

cve.org (CVE-2018-25426)

nvd.nist.gov (CVE-2018-25426)

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