CVE-2026-12466

chromium-browser: webrtc: 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 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)

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 chromium-browser: webrtc: chromium-browser: Heap buffer overflow in WebRTC
Weaknesses CWE-787
References
Metrics threat_severity

None

threat_severity

Important

Type Values Removed Values Added
Title Remote Code Execution via Heap Buffer Overflow in WebRTC on Windows Chrome
Type Values Removed Values Added
Title Remote Code Execution via Heap Buffer Overflow in WebRTC on Windows Chrome
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 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)
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 25, 2026, 11:10 PM
Severity
Important
Public date
Jun 17, 2026, 1:38 AM