CVE-2025-61857
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedAn out-of-bounds write vulnerability exists in VS6ComFile!CItemExChange::WinFontDynStrCheck of V-SFT v6.2.7.0 and earlier. Opening specially crafted V-SFT files may lead to information disclosure, affected system's abnormal end (ABEND), and arbitrary code execution.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceAn out-of-bounds write vulnerability exists in the V-SFT application's file parsing component (VS6ComFile!CItemExChange::WinFontDynStrCheck). When the application opens a specially crafted V-SFT file containing malformed font data, it writes beyond allocated memory boundaries, leading to heap corruption that can be exploited for information disclosure, denial of service (system ABEND), or arbitrary code execution.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data<= 6.2.7.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Local
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
-
Check if Fujielectric Monitouch V Sft is installedSearch for V-SFT installation directories (typically in Program Files or application-specific paths) or check Windows registry for installed software under HKEY_LOCAL_MACHINE\SOFTWARE or HKEY_CURRENT_USER\SOFTWARE for entries containing 'V-SFT' or 'Monitouch'Affected if The application is found on the system
-
Determine the installed V-SFT versionLocate the main executable or DLL (commonly VS6ComFile.dll or V-SFT.exe) and check its version properties (right-click > Properties > Details, or use PowerShell: Get-ItemProperty on the file). Compare the version number to the affected range <= 6.2.7.0Affected if The installed version is 6.2.7.0 or lower
-
Verify the vulnerable parsing component existsCheck for the presence of VS6ComFile.dll in the V-SFT installation directory, specifically looking for the CItemExChange::WinFontDynStrCheck function within the file (may require third-party tools to inspect exports)Affected if VS6ComFile.dll exists with the vulnerable function
-
Confirm the file parsing feature is accessibleVerify the application can open V-SFT project files (typically .vsf or similar extensions). The vulnerability triggers when the WinFontDynStrCheck function processes font data during file parsingAffected if The application can open V-SFT files and the font parsing component is loaded
-
Check for recent file opening activity (if logs available)Review application logs, Windows event logs, or temp directories for recently opened V-SFT files from untrusted sources. The vulnerability triggers upon opening a crafted file with malformed font dataAffected if Untrusted V-SFT files have been opened on the system
A system is affected if Fujielectric Monitouch V Sft version 6.2.7.0 or lower is installed and the VS6ComFile.dll component with the vulnerable WinFontDynStrCheck function is present, as the out-of-bounds write triggers when opening a malformed V-SFT file.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpgrade V-SFT to version v6.2.7.1 or later to obtain the vendor patch. Until the patch is applied, refrain from opening untrusted V-SFT files from unknown or unverified sources.
- Consultation2.0 h
- Implementation1.0 h
- Testing4.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,176.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-61857 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-61857 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data