CVE-2026-6306: 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 involves a heap buffer overflow in PDFium, the PDF rendering engine used by Google Chrome. Exploitation requires a crafted PDF file that triggers the overflow, enabling remote code execution inside the sandbox environment of Chrome. The issue affects Chrome versions before 147.0.7727.101. The Chromium security team rates this vulnerability as high severity. The vendor has published a stable channel update to fix this issue as referenced in their advisory.
Potential Impact
Successful exploitation of this vulnerability allows remote attackers to execute arbitrary code within the sandboxed environment of Google Chrome. This could potentially lead to further compromise depending on sandbox escape techniques, but the direct impact is limited to code execution inside the sandbox. There are no known exploits in the wild at the time of publication.
Mitigation Recommendations
A fix is available in Google Chrome version 147.0.7727.101 and later. Users and administrators should update to this version or newer to remediate the vulnerability. 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 detailed update instructions.
CVE-2026-6306: 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)
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a heap buffer overflow in PDFium, the PDF rendering engine used by Google Chrome. Exploitation requires a crafted PDF file that triggers the overflow, enabling remote code execution inside the sandbox environment of Chrome. The issue affects Chrome versions before 147.0.7727.101. The Chromium security team rates this vulnerability as high severity. The vendor has published a stable channel update to fix this issue as referenced in their advisory.
Potential Impact
Successful exploitation of this vulnerability allows remote attackers to execute arbitrary code within the sandboxed environment of Google Chrome. This could potentially lead to further compromise depending on sandbox escape techniques, but the direct impact is limited to code execution inside the sandbox. There are no known exploits in the wild at the time of publication.
Mitigation Recommendations
A fix is available in Google Chrome version 147.0.7727.101 and later. Users and administrators should update to this version or newer to remediate the vulnerability. 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 detailed update instructions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-04-14T18:12:23.161Z
- 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: 69dfe7b982d89c981f913cd0
Added to database: 4/15/2026, 7:32:09 PM
Last enriched: 4/15/2026, 7:48:50 PM
Last updated: 4/16/2026, 6:23:19 AM
Views: 7
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