CVE-2026-6305: Heap buffer overflow in Google Chrome
Heap buffer overflow in PDFium in Google Chrome prior to 147.0.7727.101 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted PDF file. (Chromium security severity: High)
AI Analysis
Technical Summary
This vulnerability is a heap buffer overflow (CWE-122) in PDFium, the PDF rendering engine used by Google Chrome. It affects Chrome versions before 147.0.7727.101 and enables remote code execution inside the sandbox through malicious PDF files. The CVSS 3.1 vector indicates the attack requires no privileges and low attack complexity but requires user interaction. Confidentiality, integrity, and availability impacts are all rated high. The issue was publicly disclosed on April 15, 2026, and a vendor advisory provides a patch in Chrome version 147.0.7727.101.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary code within the sandbox environment of Chrome, potentially compromising the confidentiality, integrity, and availability of the affected system. The vulnerability is rated high severity with a CVSS score of 8.8. No known exploits are currently reported in the wild.
Mitigation Recommendations
A fix is available in Google Chrome version 147.0.7727.101. Users and administrators should update to this version or later to remediate the vulnerability. Since this is not a cloud service, remediation depends on applying the update. Refer to the official Google Chrome stable channel update advisory at https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop_15.html for details.
CVE-2026-6305: Heap buffer overflow in Google Chrome
Description
Heap buffer overflow in PDFium in Google Chrome prior to 147.0.7727.101 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted PDF file. (Chromium security severity: High)
CVSS v3.1
Score 8.8high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is a heap buffer overflow (CWE-122) in PDFium, the PDF rendering engine used by Google Chrome. It affects Chrome versions before 147.0.7727.101 and enables remote code execution inside the sandbox through malicious PDF files. The CVSS 3.1 vector indicates the attack requires no privileges and low attack complexity but requires user interaction. Confidentiality, integrity, and availability impacts are all rated high. The issue was publicly disclosed on April 15, 2026, and a vendor advisory provides a patch in Chrome version 147.0.7727.101.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary code within the sandbox environment of Chrome, potentially compromising the confidentiality, integrity, and availability of the affected system. The vulnerability is rated high severity with a CVSS score of 8.8. No known exploits are currently reported in the wild.
Mitigation Recommendations
A fix is available in Google Chrome version 147.0.7727.101. Users and administrators should update to this version or later to remediate the vulnerability. Since this is not a cloud service, remediation depends on applying the update. Refer to the official Google Chrome stable channel update advisory at https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop_15.html for details.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-04-14T18:12:22.696Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop_15.html","vendor":"Google"}]
Threat ID: 69dfe7b982d89c981f913ccc
Added to database: 4/15/2026, 7:32:09 PM
Last enriched: 5/27/2026, 7:57:06 PM
Last updated: 5/30/2026, 7:38:33 PM
Views: 54
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