What is the CVSS score of EUVD-2026-34396?

EUVD-2026-34396 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of Google Chrome are affected by EUVD-2026-34396?

A remote code execution vulnerability in Google Chrome's WebRTC component (CVE-2026-10947, CVSS 8.8) allows attackers to compromise user systems when users visit malicious websites, affecting all…. A patch is available.

How to fix or mitigate EUVD-2026-34396?

24 hours: Inventory Chrome deployments across all endpoints (managed and BYOD) and assess patch readiness. 7 days: Deploy Google Chrome version 149.0.7827.53 or later organization-wide via MDM/patch management and confirm via compliance scans. 30 days: Validate 100% deployment compliance and audit for any remaining non-compliant installations.

Google Chrome EUVD-2026-34396

| CVE-2026-10947 HIGH

Use After Free (CWE-416)

2026-06-04 chrome-cve-admin@google.com

GHSA-jhv3-c9rv-g7mr

Google Memory Corruption RCE Use After Free Denial Of Service

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

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

SUSE

HIGH

qualitative

Red Hat

9.6 HIGH

qualitative

Primary rating from NVD.

CVSS VectorNVD

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

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Jun 05, 2026 - 02:47 vuln.today

CVSS changed

Jun 05, 2026 - 02:22 NVD

8.8 (HIGH)

CVE Published

Jun 04, 2026 - 23:16 nvd

HIGH 8.8

CVE Published

Jun 04, 2026 - 23:16 nvd

UNKNOWN (no severity yet)

DescriptionCVE.org

Use after free in WebRTC in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

AnalysisAI

Remote code execution in Google Chrome versions prior to 149.0.7827.53 stems from a use-after-free flaw in the WebRTC component, enabling a remote attacker to execute arbitrary code within the renderer sandbox when a victim visits a crafted HTML page. Google rates the underlying Chromium severity as High, and the CVSS 3.1 score of 8.8 reflects network-reachable, low-complexity exploitation requiring only user interaction (visiting a page). No public exploit code has been identified at time of analysis and the vulnerability is not listed in CISA KEV.

Technical ContextAI

WebRTC (Web Real-Time Communication) is the browser subsystem that enables peer-to-peer audio, video, and data channels directly between browsers, and it is enabled by default in Chrome. The flaw is classified as CWE-416 (Use-After-Free), a memory-safety error where code continues to reference a heap object after it has been freed; an attacker who can influence the timing and contents of reallocations can place attacker-controlled data into the freed slot and hijack subsequent dereferences, typically leading to type confusion and arbitrary code execution. Because WebRTC parses untrusted media/signaling state from a remote page, the attack surface is exposed to any origin the user visits. Per CPE/version data in the EUVD entry, only Chrome desktop builds before 149.0.7827.53 are affected; the issue is tracked upstream as Chromium issue 504597736.

RemediationAI

Vendor-released patch: Google Chrome 149.0.7827.53 - upgrade Chrome on all desktop endpoints to 149.0.7827.53 or later via the Stable channel as described in the Chrome Releases advisory (https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html); fleet-managed deployments should force a relaunch to ensure the update is applied. For Chromium-derivative browsers, install the vendor build that pulls in the WebRTC fix once published. As an interim compensating control if patching is delayed, administrators can disable WebRTC via enterprise policy (e.g., the WebRtcAllowLegacyTLSProtocols/URLBlocklist combination, or extensions that block WebRTC), accepting that this breaks video conferencing, Google Meet, Teams web client, and most peer-to-peer media applications; restricting browsing to trusted sites and enforcing Site Isolation reduces but does not eliminate exposure since UI:R only requires a user to visit an attacker-controlled page.