CVE-2026-106421: Use after free in Google Chrome
Description
Use after free in PDF in Google Chrome prior to 155.0.8059.39 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)
CVSS v3.1
Score 8.8high
Affected software
Chrome
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-106421 is a use-after-free vulnerability in the PDF handling functionality of Google Chrome before version 155.0.8059.39. Exploitation involves a remote attacker crafting a malicious HTML page that triggers the use-after-free condition, enabling arbitrary code execution within the browser's sandbox environment. The vulnerability has been assigned a high severity rating by the Chromium security team. Google has released an update to address this issue in Chrome version 155.0.8059.39.
Potential Impact
Successful exploitation of this vulnerability could allow a remote attacker to execute arbitrary code inside the Chrome sandbox, potentially leading to unauthorized actions within the browser context. However, the attack surface is limited to users who open crafted HTML pages containing malicious PDF content.
Mitigation Recommendations
Users and administrators should update Google Chrome to version 155.0.8059.39 or later to remediate this vulnerability. The vendor advisory confirms that the issue is fixed in this version. No additional mitigations are specified.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-10-06T16:38:46.410Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_086471744.html","vendor":"Google"}]
Threat ID: 6ac546652cdf04f656d4a15b
Added to database: 10/06/2026, 19:05:09 UTC
Last enriched: 10/06/2026, 19:18:38 UTC
Last updated: 10/07/2026, 04:04:08 UTC
Views: 4
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