ChromeWeb browser · Google
CVE-2026-8558
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 · uneditedOut of bounds write in Fonts in Google Chrome prior to 148.0.7778.168 allowed a remote attacker to execute arbitrary code inside a sandbox 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 · moderate confidenceOut of bounds write vulnerability in Google Chrome's Fonts component allows remote attackers to execute arbitrary code via a crafted HTML page. The vulnerability affects versions prior to 148.0.7778.168.
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
< 148.0.7778.168CVSS 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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Find installed Chrome versionOpen Chrome, click the three-dot menu (top right), select 'Help', then 'About Google Chrome'. The version number is displayed on that page.Affected if The displayed version number is lower than 148.0.7778.168
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Verify Chrome version via command line (optional alternative)On Windows, run 'chrome --version' or check 'C:\Program Files\Google\Chrome\Application\chrome.exe' properties. On macOS, run '/Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome --version' in Terminal.Affected if The command output shows a version below 148.0.7778.168
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Confirm Chrome is operationalLaunch Chrome normally and verify the browser interface loads without errors.Affected if Chrome launches successfully and the Fonts component is accessible (this is the default state)
If the installed Google Chrome version is any version prior to 148.0.7778.168, the environment is affected by this vulnerability.
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 · scoped148.0.7778.168
Update Google Chrome to version 148.0.7778.168 or later to remediate this vulnerability.
Chrome 148.0.7778.168
- Open Google Chrome and navigate to Settings > Help > About Google Chrome
- Click 'Check for updates' or wait for Chrome to automatically check for updates
- Allow Chrome to download and install the update
- Restart Chrome when prompted to complete the installation
- Verify the version by going to Settings > Help > About Google Chrome - it should show version 148.0.7778.168 or later
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Chrome
Scoped from the published advisory
- Consultation1.0 h
- Testing1.0 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 $1,200.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-8558 — 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-2026-8558 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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