WM Downloader 3.1.2.2 Buffer Overflow via Malformed M3U File
Published Aug 30, 2025
8.4
HIGHCVSS 4.0
EPSS 0.33%
Description
WM Downloader version 3.1.2.2 is vulnerable to a buffer overflow when processing a specially crafted .m3u playlist file. The application fails to properly validate input length, allowing an attacker to overwrite structured exception handler (SEH) records and execute arbitrary code. Exploitation occurs locally when a user opens the malicious file, and the payload executes with the privileges of the current user.
Affected products
-
- Version 0StatusaffectedConstraints<=3.1.2.2
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| WM Downloader | WM Downloader | unaffected |
|
No data.
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:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
1 other source (NVD) ▾
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/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
No CVSS v3.1 score for this CVE.
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
NoTechnical Impact
TotalDecision
n/aAssessed Sep 2, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 4, 2026.
Score over time
2025-2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (8 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 4, 2026 | 0.33% (0.00329) | 23.73th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.30% (0.00304) | 21.86th | v5 (v2026.06.15) |
| May 22, 2026 | 10.89% (0.10893) | 93.48th | v4 (v2025.03.14) |
| May 16, 2026 | 9.70% (0.09703) | 93.01th | v4 (v2025.03.14) |
| Jan 26, 2026 | 8.44% (0.08442) | 92.10th | v4 (v2025.03.14) |
| Dec 30, 2025 | 12.31% (0.12315) | 93.64th | v4 (v2025.03.14) |
| Oct 8, 2025 | 9.50% (0.09501) | 92.44th | v4 (v2025.03.14) |
| Aug 31, 2025 | 0.02% (0.00016) | 2.19th | v4 (v2025.03.14) |
References (5)
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/fileformat/wm_downloader_m3u.rb exploit
- https://www.exploit-db.com/exploits/14497 exploit
- https://www.exploit-db.com/exploits/16642 exploit
- https://www.fortiguard.com/encyclopedia/ips/24038/wm-downloader-buffer-overflow third-party-advisory
- https://www.vulncheck.com/advisories/wm-downloader-buffer-overflow-via-malformed-m3u-file third-party-advisory
Change history (0)
No recorded changes yet.