CVE-2026-12447

chromium-browser: chromium-browser: Heap buffer overflow in WebRTC

Published Jun 17, 2026 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Description
Heap buffer overflow in WebRTC in Google Chrome prior to 149.0.7827.155 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-6351-1 chromium security update
History
Type Values Removed Values Added
Title WebRTC Heap Buffer Overflow Enables Remote Code Execution in Chrome chromium-browser: chromium-browser: Heap buffer overflow in WebRTC
Weaknesses CWE-131
References
Metrics threat_severity

None

threat_severity

Important

Type Values Removed Values Added
Title WebRTC Heap Buffer Overflow Enables Remote Code Execution in Chrome
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Google
Google chrome
Vendors & Products Google
Google chrome
Type Values Removed Values Added
Description Heap buffer overflow in WebRTC in Google Chrome prior to 149.0.7827.155 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
Weaknesses CWE-122
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
Chrome
Published
Updated
Jun 18, 2026, 3:55 AM
Reserved
Jun 16, 2026, 7:38 PM
Status
Analyzed
Published
Jun 17, 2026, 1:20 PM
Modified
Oct 26, 2026, 11:10 AM
Severity
Important
Public date
Jun 17, 2026, 1:38 AM