Denial of Service Vulnerability in WinMTR Software by WinMTR
CVE-2018-25426

8.7HIGH

Key Information:

Vendor

Winmtr

Status
Winmtr
Vendor
CVE Published:
30 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2018-25426?

WinMTR 0.91 is susceptible to a denial of service vulnerability that can lead to application crashes. By crafting a specific input file that contains a large buffer of repeated characters totaling 238 bytes, attackers are able to trigger a buffer overflow condition. This vulnerability allows for the crashing of the WinMTR application, potentially disrupting network diagnostic operations. Users of this software are advised to monitor for updates and apply patches as necessary to safeguard against this issue.

Affected Version(s)

WinMTR 0.91

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2018-25426 - Proof of Concept

References

https://www.exploit-db.com/exploits/45769
exploit
http://winmtr.net
product
http://winmtr.net/winmtr_download/
product

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Ihsan Sencan
.