CVE-2026-12466

FAUCET Score

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)

First published: Jun 17, 2026Last modified: Jun 17, 2026

Impacted Technologies

Vendor	Product	Version(s)	CPE
		< 149.0.7827.155CPE matchmatch criteria	cpe:2.3:a:google:chrome::::::::
		>= 149.0.7827.155, < 149.0.7827.155CPE match	cpe:2.3:a:google:chrome::::::::

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

Exploitability Score

2.8

Impact Score

5.9

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.43%

Probability of exploitation in next 30 days

EPSS Percentile

34.9%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0043 is in the 38th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

microsoftpatch availablevia msrc

Product: Microsoft Edge (Chromium-based)Fixed in: 149.0.4022.80

Vendor Advisories (1)

microsoft2026-Jun/CVE-2026-12466

Chromium: CVE-2026-12466 Heap buffer overflow in WebRTC

Jun 9, 2026

References

chromereleases.googleblog.com / 2026/06/stable-channel-update-for-desktop_01750511403.html

Vendor Advisory

issues.chromium.org / issues/520199394

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