ChromeWeb browser · Google
CVE-2026-9940
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 buffer overflow in ANGLE in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
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 confidenceA heap buffer overflow vulnerability exists in ANGLE (a graphics library used by Chrome for WebGL) that allows a remote attacker to corrupt heap memory through a maliciously crafted HTML page, potentially enabling 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
ChromeWeb browser
< 148.0.7778.216CVSS 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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Confirm Google Chrome is installedOpen terminal or command prompt and run: chrome --version (Windows) or google-chrome --version (Linux) or on macOS: /Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome --versionAffected if Chrome is not installed or command returns an error, then this CVE does not apply to your environment
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Identify installed Chrome versionIf the --version command above returns a version number, note it. On Windows you can also check: chrome://settings/helpAffected if The installed version is less than 148.0.7778.216, indicating the browser is vulnerable
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Verify ANGLE library is in useIn Chrome, navigate to chrome://gpu and look for the 'Graphics Feature Status' section. Check if ANGLE is listed as enabled (typically shows 'Hardware' or 'Software' under ANGLE)Affected if ANGLE is enabled and the Chrome version is below 148.0.7778.216, the specific heap overflow condition exists
You are affected if Google Chrome is installed with a version number lower than 148.0.7778.216 and ANGLE graphics backend is enabled in the browser settings.
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 · scoped148.0.7778.216
Update Google Chrome to version 148.0.7778.216 or later to patch the ANGLE heap buffer overflow vulnerability.
Chrome 148.0.7778.216 or later
- Open Chrome and navigate to chrome://version to check your current Chrome version
- If version is below 148.0.7778.216, download the latest stable Chrome from https://www.google.com/chrome
- Install the downloaded Chrome update
- Restart Chrome to apply the update
- Verify the update was successful by checking chrome://version again - ensure version is 148.0.7778.216 or higher
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Chrome
Scoped from the published advisory
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 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 $1,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-9940 — 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-2026-9940 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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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