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)
Published: 2026-06-17
Score: 8.8 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

A heap-based buffer overflow exists in the WebRTC component of Google Chrome. The flaw allows a remote attacker who delivers a specially crafted HTML page to execute arbitrary code inside the browser sandbox. The problem is rooted in unchecked memory bounds handling (CWE‑122).

Affected Systems

Google Chrome versions preceding 149.0.7827.155 are affected.

Risk and Exploitability

The CVSS score of 8.8 marks this issue as high severity, but its EPSS of less than 1% suggests low exploitation probability at present. It is not listed in CISA’s KEV catalog. The attack requires a victim to visit or otherwise trigger the malicious page, after which the attacker can run code confined to the browser sandbox, potentially leveraging additional escape mechanisms if present.

Generated by OpenCVE AI on June 19, 2026 at 13:51 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Install the Chrome update to version 149.0.7827.155 or later
  • Enable automatic browser updates to receive future security fixes promptly
  • If updating immediately is not possible, disable or restrict WebRTC functionality through browser policy or extensions to reduce exposure

Generated by OpenCVE AI on June 19, 2026 at 13:51 UTC.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
Debian DSA Debian DSA DSA-6351-1 chromium security update
History

Fri, 19 Jun 2026 12:15:00 +0000

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

Thu, 18 Jun 2026 04:45:00 +0000

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

Wed, 17 Jun 2026 13:30:00 +0000

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'}

Wed, 17 Jun 2026 07:15:00 +0000

Type Values Removed Values Added
First Time appeared Google
Google chrome
Vendors & Products Google
Google chrome

Wed, 17 Jun 2026 05:15:00 +0000

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

Subscriptions

Google Chrome
cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-06-18T03:55:37.721Z

Reserved: 2026-06-16T19:38:26.765Z

Link: CVE-2026-12447

cve-icon Vulnrichment

Updated: 2026-06-17T13:00:19.748Z

cve-icon NVD

No data.

cve-icon Redhat

Severity : Important

Publid Date: 2026-06-17T01:38:14Z

Links: CVE-2026-12447 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-06-19T14:00:16Z

Weaknesses
  • CWE-122

    Heap-based Buffer Overflow

  • CWE-131

    Incorrect Calculation of Buffer Size