What’s Vulnerable › Vulnerabilities

CVE-2018-25426: WinMTR 0.91 Denial of Service via Buffer Overflow

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-05-30 · updated 2026-10-06
• Weakness: CWE-120

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.

Affected products

• WinMTR: 0.91

References

• http://winmtr.net
• http://winmtr.net/winmtr_download/
• https://www.exploit-db.com/exploits/45769
• https://www.vulncheck.com/advisories/winmtr-denial-of-service-via-buffer-overflow

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