CVE-2026-12466: Heap buffer overflow in Google Chrome
Heap buffer overflow in WebRTC in Google Chrome on Windows prior to 149.0.7827.155 allowed a remote attacker to execute arbitrary code via a crafted HTML page. (Chromium security severity: High)
AI Analysis
Technical Summary
CVE-2026-12466 is a heap buffer overflow vulnerability in the WebRTC implementation of Google Chrome on Windows. It allows remote code execution when a user visits a maliciously crafted HTML page. The vulnerability affects Chrome versions before 149.0.7827.155. Google has released an update to address this issue, as noted in their official advisory.
Potential Impact
Successful exploitation of this vulnerability could allow a remote attacker to execute arbitrary code on the affected system with the privileges of the user running Chrome. This could lead to full compromise of the user's environment, including confidentiality, integrity, and availability impacts.
Mitigation Recommendations
Users should update Google Chrome on Windows to version 149.0.7827.155 or later to remediate this vulnerability. The vendor advisory at https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_01750511403.html confirms the availability of this fix.
CVE-2026-12466: Heap buffer overflow in Google Chrome
Description
Heap buffer overflow in WebRTC in Google Chrome on Windows prior to 149.0.7827.155 allowed a remote attacker to execute arbitrary code via a crafted HTML page. (Chromium security severity: High)
CVSS v3.1
Score 8.8high
Affected software
pkg:github/chromium/chromiumRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-12466 is a heap buffer overflow vulnerability in the WebRTC implementation of Google Chrome on Windows. It allows remote code execution when a user visits a maliciously crafted HTML page. The vulnerability affects Chrome versions before 149.0.7827.155. Google has released an update to address this issue, as noted in their official advisory.
Potential Impact
Successful exploitation of this vulnerability could allow a remote attacker to execute arbitrary code on the affected system with the privileges of the user running Chrome. This could lead to full compromise of the user's environment, including confidentiality, integrity, and availability impacts.
Mitigation Recommendations
Users should update Google Chrome on Windows to version 149.0.7827.155 or later to remediate this vulnerability. The vendor advisory at https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_01750511403.html confirms the availability of this fix.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-06-16T19:38:33.475Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_01750511403.html","vendor":"Google"}]
Threat ID: 6a31ffcc0b89be68889b026e
Added to database: 06/17/2026, 02:00:44 UTC
Last enriched: 06/24/2026, 15:56:14 UTC
Last updated: 07/31/2026, 19:22:57 UTC
Views: 250
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