CVE-2026-9960: Integer overflow in PDFium

Published Apr 20, 2026
·
Updated

Chromium: CVE-2026-9960 Integer overflow in PDFium

Other sources

Integer overflow in PDFium in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to execute arbitrary code inside a sandbox via a crafted font file. (Chromium security severity: High)

— NVD

This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information.

— Microsoft

Credit

Google

Affected Software

9 affected componentsFixes available
Google Google Chrome<148.0.7778.216
Google Chrome<148.0.7778.216
148.0.7778.216
All of the following
Google Chrome<148.0.7778.216
Microsoft Windows
All of the following
Google Chrome<148.0.7778.215
Any of the following
Apple macOS
Linux Linux kernel
Microsoft Edge (Chromium-based)
Patch available
Microsoft Edge<148.0.3967.96

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 148.0.7778.216
  2. Upgrade

    Upgrade Chromium-based browsers (including Microsoft Edge) to a version that resolves this vulnerability.

    Fixed in 148.0.7778.216
  3. Compensating control

    If you are not yet updated, reduce exposure by limiting access to untrusted/crafted PDF/font content in the browser until Chromium is updated (this mitigates the remote attacker scenario via a crafted font file).

Event History

Apr 20, 2026
CVE Published
12:00 AM
Data Sourced
12:00 AM
SeverityWeaknessAffected Software
May 28, 2026
CVE Published
via MITRE·10:25 PM
Data Sourced
via MITRE·10:25 PM
DescriptionWeakness
Data Sourced
via NVD·11:16 PM
DescriptionSeverityWeaknessAffected Software
May 29, 2026
Data Sourced
via Microsoft·11:20 PM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·11:20 PM
DescriptionAffected Software
Jun 29, 58424
Event
via FIRST·06:21 AM

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

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Frequently Asked Questions

1

What is the severity of CVE-2026-9960?

The severity of CVE-2026-9960 is rated as high, with a score of 7.

2

How do I fix CVE-2026-9960?

To mitigate CVE-2026-9960, update Google Chrome to version 148.0.7778.216 or later.

3

What is CVE-2026-9960 about?

CVE-2026-9960 involves an integer overflow vulnerability in PDFium that allows remote code execution in Google Chrome.

4

Which versions of Google Chrome are affected by CVE-2026-9960?

CVE-2026-9960 affects Google Chrome versions prior to 148.0.7778.216.

5

What type of vulnerability is CVE-2026-9960 classified as?

CVE-2026-9960 is classified as an integer overflow vulnerability.

Company

Resources

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