WinMTR 0.91 Denial of Service via Buffer Overflow
Published May 30, 2026
8.7
HIGHCVSS 4.0
EPSS 0.51%
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
-
- Version 0.91StatusaffectedConstraints-
- Version
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
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
1 other source (NVD) ▾
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
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
YesTechnical Impact
PartialDecision
n/aAssessed Jun 1, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
May–Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.51% (0.00514) | 41.61th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.46% (0.00463) | 36.38th | v5 (v2026.06.15) |
| May 31, 2026 | 0.04% (0.00041) | 12.90th | v4 (v2025.03.14) |
References (4)
- http://winmtr.net product
- http://winmtr.net/winmtr_download/ productExploit
- https://www.exploit-db.com/exploits/45769 exploitThird Party AdvisoryVDB Entry
- https://www.vulncheck.com/advisories/winmtr-denial-of-service-via-buffer-overflow third-party-advisoryThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://winmtr.net | product | |
| http://winmtr.net/winmtr_download/ | productExploit | |
| https://www.exploit-db.com/exploits/45769 | exploitThird Party AdvisoryVDB Entry | |
| https://www.vulncheck.com/advisories/winmtr-denial-of-service-via-buffer-overflow | third-party-advisoryThird Party Advisory |
Change history (0)
No recorded changes yet.