CVE-2025-62201
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 · uneditedHeap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
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 · moderate confidenceHeap-based buffer overflow in Microsoft Office Excel enables an unauthenticated attacker to execute arbitrary code locally by tricking a user into opening a specially crafted malicious Excel file.
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 dataall versions= 2016= 2019= 2021= 2024< 16.0.10417.20068CVSS 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.
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Identify installed Microsoft Excel versionOpen Excel, go to File > Account > About Excel, or right-click on excel.exe in Program Files/Microsoft Office and select Properties > Details to view the version numberAffected if version is 2016 or later (or any version for Microsoft 365 Apps)
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Check Microsoft Office versionOpen any Office app, go to File > Account, or check Registry: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\ClickToRun\Configuration for Microsoft 365 appsAffected if Office version is 2019 or later (or any version for Microsoft 365 Apps)
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Verify Office Long Term Servicing Channel version (if applicable)Check the installed LTSC version via Office app or by reviewing the installation media and installed updatesAffected if LTSC version is 2021 or 2024 (these specific versions are listed as affected)
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Check Microsoft Office Online Server version (if applicable)For on-premises OOS, run Get-OfficeOnlineServerTrail cmdlet or check the version via Office Online Server administrationAffected if Office Online Server version is below 16.0.10417.20068
A user is affected if they have any version of Microsoft 365 Apps, Excel 2016 or later, Office 2019 or later, Office LTSC 2021 or 2024, or Office Online Server below version 16.0.10417.20068, and they open untrusted Excel files.
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 data16.0.10417.20068
Apply Microsoft security updates for Office/Excel as soon as they become available; avoid opening untrusted Excel files from unknown sources.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-62201 — 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-2025-62201 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
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- 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