CVE-2025-25000
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 · uneditedAccess of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
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 confidenceA type confusion vulnerability in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code remotely. The vulnerability involves the access of a resource using an incompatible type, which can lead to arbitrary code execution over a network without user interaction beyond visiting a malicious page.
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< 135.0.3179.54CVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/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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Check if Microsoft Edge is installedOn Windows, open Command Prompt or PowerShell and run: reg query 'HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\msedge.exe' 2>nul or search for msedge.exe in Program Files. On macOS, check /Applications for Microsoft Edge.app.Affected if Microsoft Edge is not found on the system
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Determine the installed Microsoft Edge versionOpen Command Prompt or PowerShell and run: msedge --version or navigate to edge://settings/help in the browser address bar.Affected if The displayed version number is less than 135.0.3179.54 (for example, 134.0.3008.55 or earlier)
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Verify the Chromium component versionType edge://version in the address bar and note the Chromium version listed in the first line (Chrome/Chromium: X.X.X.X).Affected if The Chromium component version corresponds to an unpatched release predating the 135.0.3179.54 update
If Microsoft Edge is installed and its version is lower than 135.0.3179.54, the environment is vulnerable to remote code execution via the type confusion flaw.
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.
dbcve · scoped135.0.3179.54
Apply available Microsoft Edge security updates or upgrade to the latest patched version to remediate the type confusion vulnerability.
135.0.3179.54
- Open Microsoft Edge and navigate to Settings > Help and feedback > About Microsoft Edge
- The browser will automatically check for updates and display the current version
- If a version lower than 135.0.3179.54 is shown, click 'Download and install' or wait for automatic update completion
- Restart Edge after the update completes
- Verify the fix by returning to Settings > Help and feedback > About Microsoft Edge and confirming version 135.0.3179.54 or later is installed
Generated from the published advisory — verify against the referenced sources before acting.
- 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-2025-25000 — 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-2025-25000 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
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