ChromeWeb browser · Google
CVE-2019-13686
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 · uneditedUse after free in offline mode in Google Chrome prior to 77.0.3865.90 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 confidenceThis is a use-after-free vulnerability in Google Chrome's offline mode that existed prior to version 77.0.3865.90. A remote attacker could exploit this by tricking a user into visiting a crafted HTML page, potentially leading to heap corruption and 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
< 77.0.3865.90CVSS 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 installed Google Chrome versionNavigate to chrome://version in the Chrome address bar and note the version number displayed under 'Google Chrome' (the first line), or go to Menu > Help > About Google ChromeAffected if The displayed version number is lower than 77.0.3865.90 (for example, 77.0.3865.75 or any version in the 70s or lower)
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Confirm Chrome is the default or used browserCheck if Google Chrome is installed as a primary browser on the system by looking for the Chrome icon in the taskbar, start menu, or by running 'chrome --version' from command line if Chrome is in the system PATHAffected if Google Chrome is actively used as a browser on this system
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Verify offline mode feature availabilityThis vulnerability exists in Chrome's offline mode (the feature that allows browsing cached pages when offline). The feature is built into Chrome and requires no special configuration - it becomes active when the browser detects no network connectivityAffected if The browser can enter offline mode (this is true for any standard Chrome installation) and the version is below 77.0.3865.90
A user is affected if they use Google Chrome version lower than 77.0.3865.90 and can access the browser's offline mode feature, as the use-after-free vulnerability can be triggered by visiting a crafted HTML page.
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 data77.0.3865.90
Update Google Chrome to version 77.0.3865.90 or later to apply the patch that addresses this use-after-free vulnerability.
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-2019-13686 — 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-2019-13686 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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