Heap Buffer Overflow in PDFium of Google Chrome
CVE-2026-4455

8.8HIGH

Key Information:

Vendor

Google
Status
Chrome
Vendor
CVE Published:
20 March 2026

What is CVE-2026-4455?

A heap buffer overflow vulnerability exists in the PDFium component of Google Chrome that allows an attacker to exploit heap corruption through specially crafted PDF files. This flaw could enable remote exploitation by manipulating user interactions with documents viewed in the browser, posing risks to user data integrity and security.

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Affected Version(s)

Chrome 146.0.7680.153

References

https://chromereleases.googleblog.com/2026/03/stable-chan...
https://issues.chromium.org/issues/488585504

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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