ChromeWeb browser · Google
CVE-2025-1918
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 read in PDFium in Google Chrome prior to 134.0.6998.35 allowed a remote attacker to potentially perform out of bounds memory access via a crafted PDF file. (Chromium security severity: Medium)
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 confidenceAn out-of-bounds read vulnerability exists in PDFium, the PDF rendering engine in Google Chrome, allowing a remote attacker to access memory outside allocated buffers by tricking users into opening a specially crafted PDF file. This information disclosure issue has a CVSS 8.8 (HIGH) due to the low attack complexity and potential for sensitive data exposure.
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
< 134.0.6998.35CVSS 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 versionOpen chrome://version in the Chrome address bar and note the version number displayed under 'Google Chrome' (first line), or click the three-dot menu > Help > About Google Chrome to view the versionAffected if Version number is lower than 134.0.6998.35 (for example, 133.x.x.x or earlier)
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Confirm PDF functionality is accessibleVerify that Chrome can open PDF files by attempting to open any PDF in the browser, or check if the internal PDF viewer is not explicitly disabled via Chrome policiesAffected if PDF viewer is enabled and the user can open PDF documents
You are affected if your Google Chrome version is below 134.0.6998.35 and you open PDF files using the browser's built-in PDF viewer.
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 · scoped134.0.6998.35
Update Google Chrome to version 134.0.6998.35 or later to patch the vulnerability. Organizations should deploy browser updates through their software distribution systems and verify completion across endpoints.
Chrome 134.0.6998.35 or later
- Open Google Chrome on your computer
- Click the three-dot menu icon in the top-right corner
- Select 'Help' from the dropdown menu
- Click 'About Google Chrome'
- Chrome will automatically check for updates and display the current version
- If the version shown is below 134.0.6998.35, click 'Update Google Chrome' to install the fix
- After the update completes, click 'Relaunch' to restart Chrome and apply the changes
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Chrome
Scoped from the published advisory
- Consultation1.0 h
- Implementation2.0 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 $1,424.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-1918 — 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-2025-1918 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