CVE-2018-25426

Name: CVE-2018-25426
Creator: NVD / NIST
Published: 2026-05-30T16:17:03.993+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.7/10EPSS 0.51%

Last modified Jun 17, 2026

CVE-2018-25426 is a high-severity vulnerability rated 8.7/10 on the CVSS scale. 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.. EPSS estimates a 0.51% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS 4.0

8.7/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.51%

39.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Winmtr	Winmtr	0.91

References

http://winmtr.netProduct
http://winmtr.net/winmtr_download/Exploit
https://www.exploit-db.com/exploits/45769Exploit, Third Party Advisory, VDB Entry
https://www.vulncheck.com/advisories/winmtr-denial-of-service-via-buffer-overflowThird Party Advisory

Timeline

Published: May 30, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2018-25426?

How severe is CVE-2018-25426?

CVE-2018-25426 has a CVSS score of 8.7/10 (HIGH severity). The EPSS model estimates a 0.51% probability of exploitation in the next 30 days.

How do I fix CVE-2018-25426?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-25426?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST