Use after free in PDFium in Google Chrome prior to 149
Description
Use after free in PDFium in Google Chrome prior to 149
AI Analyst Comment
Remediation
Apply vendor security updates immediately. Monitor for exploitation attempts and review access logs.
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VENDOR: Google
PRODUCT: Chrome
AFFECTED_VERSIONS: See vendor advisory for specific affected versions
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Description Summary:
A Use-After-Free vulnerability exists in the PDFium library within Google Chrome prior to version 149, which may lead to arbitrary code execution.
Executive Summary:
A high-severity Use-After-Free flaw in Google Chrome’s PDFium engine presents a significant risk of remote code execution through the processing of malicious documents.
Vulnerability Details
CVE-ID: CVE-2026-11303
Affected Software: Google Chrome
Affected Versions: See vendor advisory for specific affected versions
Vulnerability: This vulnerability resides in the PDFium library, which handles PDF rendering. An unauthenticated attacker can exploit this memory management flaw by enticing a user to open a specially crafted PDF file.
Business Impact
The CVSS score of 8.8 highlights the severity of this vulnerability, as it allows for potential remote code execution. Compromise of the browser environment can lead to the theft of session cookies, sensitive corporate data, or further lateral movement within the network.
Remediation Plan
Immediate Action: Apply the latest security updates provided by Google to update Chrome to version 149 or higher.
Proactive Monitoring: Review security logs for anomalous behavior associated with PDF rendering processes or unexpected browser termination.
Compensating Controls: Implement organizational policies to restrict the opening of untrusted PDF files and utilize browser-based sandbox features to contain potential threats.
Exploitation Status
Public Exploit Available: false
Analyst Notes: As of June 5, 2026, there is no public information indicating active exploitation of this vulnerability. However, due to the nature of the flaw, the potential for exploitation is high.
Analyst Recommendation
Browser-based memory corruption vulnerabilities are frequently targeted by attackers. It is essential to transition to a patched version of Google Chrome immediately to eliminate the possibility of exploitation via malicious PDF content.