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ChromeWeb browser · Google

CVE-2021-21113

HIGH · 8.8 CVSS v3.1 Published 2021-01-08
Fix available
A fix is available. Upgrade to 87.0.4280.141 or later.
See remediation →
95/100
Remediation priority · Urgent
Remotely reachable No privileges

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 · unedited
Heap buffer overflow in Skia in Google Chrome prior to 87.0.4280.141 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

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 confidence

Heap buffer overflow vulnerability in Skia (graphics rendering library) in Google Chrome prior to version 87.0.4280.141. A remote attacker can exploit this via a crafted HTML page to cause heap corruption, potentially leading to arbitrary code execution.

MitigationUpdate Google Chrome to version 87.0.4280.141 or later. This is a client-side vulnerability; ensure endpoint protection and keep browsers patched through centralized patch management.

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
Affected:< 87.0.4280.141
FedoraOperating system
Affected:= 32= 33
Debian LinuxOperating system
Affected:= 10.0

CVSS 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 checks

Work through these to decide whether this CVE applies to you.

  1. Check if Google Chrome is installed
    On Windows, check for chrome.exe in Program Files or via 'where chrome' in cmd. On macOS, check /Applications/Google Chrome.app. On Linux, check /usr/bin/google-chrome or run 'which google-chrome'.
    Affected if Google Chrome is not found on the system, the user is not affected by this Chrome-specific vulnerability.
  2. Determine the installed Chrome version
    Open Chrome and navigate to chrome://version, or run 'google-chrome --version' from command line. On Windows, you can also right-click chrome.exe and view Properties > Details for the version.
    Affected if Unable to determine the version means the Chrome installation cannot be assessed.
  3. Compare installed version to 87.0.4280.141
    Parse the version number from step 2 and compare it numerically to 87.0.4280.141. Versions before 87.0.4280.141 are affected; version 87.0.4280.141 and later are not.
    Affected if Installed version is less than 87.0.4280.141 (for example, 87.0.4280.120 or 86.x.x.x) indicates the system is vulnerable.

The system is affected if Google Chrome is installed and its version is lower than 87.0.4280.141.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Upgrade available Upgrade to 87.0.4280.141 or later
Fixed in 87.0.4280.141
Interim mitigation

Update Google Chrome to version 87.0.4280.141 or later. This is a client-side vulnerability; ensure endpoint protection and keep browsers patched through centralized patch management.

Fix this in Chrome Scoped from the published advisory
  • Consultation4.0 h
  • Implementation6.0 h
  • Testing3.0 h
  • Review / QA2.0 h
15.0 hours of engineering $2,690
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,304.

Scan for this in your stack

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dbcve dependency scanner

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2021-21113 in production — separate from our analysis above.

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.

What this is

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.

What belongs here
  • 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