Cyber Resilience

CVE-2018-25426

HighPublic PoC

Published: 30 May 2026

Published
30 May 2026
Modified
03 June 2026
KEV Added
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Patch
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CVSS Score v4 8.7 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 Score 0.0051 39.9th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2018-25426 is a high-severity Classic Buffer Overflow (CWE-120) vulnerability in Winmtr Winmtr. Its CVSS base score is 8.7 (High).

Operationally, ranked at the 39.9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

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…

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data to trigger a buffer overflow condition that causes the application to crash.

CWE(s)
CWE-120

Related Threats

CVEs Like This One

CVE-2018-25299Shared CWE-120
CVE-2020-37212Shared CWE-120
CVE-2025-70314Shared CWE-120
CVE-2025-50648Shared CWE-120
CVE-2026-1679Shared CWE-120
CVE-2026-38426Shared CWE-120
CVE-2025-29363Shared CWE-120
CVE-2026-28925Shared CWE-120
CVE-2020-37029Shared CWE-120
CVE-2024-0146Shared CWE-120

Affected Assets

winmtr
winmtr
0.91

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-27 Platform-independent Applications
addresses: CWE-120

Platform-independent managed code eliminates the need for unchecked native buffer copies that are the root cause of classic buffer overflows.

References