ChromeWeb browser · Google
CVE-2021-37980
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 · uneditedInappropriate implementation in Sandbox in Google Chrome prior to 94.0.4606.81 allowed a remote attacker to potentially bypass site isolation via Windows.
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 confidenceInappropriate implementation in Chrome's Sandbox allowed a remote attacker to potentially bypass site isolation on Windows systems. Site isolation is a security feature that separates websites into different processes to prevent cross-site attacks. This vulnerability could have allowed malicious sites to access data from other sites.
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
< 94.0.4606.81
FedoraOperating system
= 33
Debian LinuxOperating system
= 10.0= 11.0CVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
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 Google Chrome versionOpen Chrome, click the three-dot menu, go to Help > About Google Chrome. The version number is displayed on this page.Affected if Version number is less than 94.0.4606.81
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Confirm Chrome is installed on WindowsVerify the operating system is Windows - open Settings > System > About, or run 'winver' in the command prompt.Affected if Running on Windows operating system
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Verify site isolation is in useSite isolation is enabled by default in Chrome. To check: navigate to chrome://flags/#site-isolation-trial-opt-out in the browser and verify the 'Opt-out' option is not selected.Affected if Site isolation has been manually disabled (not the default state)
A user is affected if they are running Google Chrome versions prior to 94.0.4606.81 on a Windows system with site isolation enabled (the default configuration).
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 · scoped94.0.4606.81
Update Google Chrome to version 94.0.4606.81 or later to patch the sandbox bypass vulnerability.
Chrome 94.0.4606.81 or later
- Open Chrome and navigate to chrome://settings/help to check your current version
- If the version is earlier than 94.0.4606.81, click 'Update Google Chrome' to install the latest version
- Restart Chrome after the update completes
- Alternatively, download the latest Chrome release from the official Google Chrome website and reinstall
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Chrome
Scoped from the published advisory
- Consultation2.0 h
- Implementation4.0 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 $2,560.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-37980 — 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-2021-37980 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