What is the CVSS score of EUVD-2026-34740?

EUVD-2026-34740 has a contested CVSS base score of 8.8 from a third party (e.g. CISA-ADP), while the vendor rates it High. vuln.today uses the vendor rating as authoritative.

Which versions of Google Chrome are affected by EUVD-2026-34740?

Google Chrome prior to version 149.0.7827.53 contains a remote code execution vulnerability in its DevTools component triggered by user visits to crafted webpages.. A patch is available.

How to fix or mitigate EUVD-2026-34740?

Within 24 hours: Issue security advisory to all users and IT staff recommending immediate Chrome update; scan asset management systems to identify Chrome versions prior to 149.0.7827.53. Within 7 days: Deploy Google Chrome version 149.0.7827.53 or later through managed update mechanisms; enforce via group policy for enterprise-managed systems. Within 30 days: Verify 95%+ deployment completion through endpoint detection tools; document remediation completion and user acknowledgment.

Google Chrome EUVD-2026-34740

| CVE-2026-11279 HIGH

Out-of-bounds Read (CWE-125)

2026-06-05 chrome-cve-admin@google.com

GHSA-fgrx-m48q-597v

Information Disclosure Google Buffer Overflow RCE

High

Disputed · 8.8 NVD

Severity by source

Sources disagree (Low–High)

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

8.8 LOW

qualitative

vuln.today treats the vendor’s rating as authoritative. A higher third-party CVSS (e.g. CISA-ADP) is shown for transparency but does not drive the headline severity.

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 - 03:17 vuln.today

CVSS changed

Jun 05, 2026 - 02:22 NVD

8.8 (HIGH)

CVE Published

Jun 05, 2026 - 00:17 nvd

UNKNOWN (no severity yet)

CVE Published

Jun 05, 2026 - 00:17 nvd

HIGH 8.8

DescriptionNVD

Out of bounds read in DevTools 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: Low)

AnalysisAI

Remote code execution in Google Chrome's DevTools component prior to version 149.0.7827.53 allows a remote attacker to execute arbitrary code within the browser sandbox by luring a user to a crafted HTML page. The flaw stems from an out-of-bounds read (CWE-125) and carries a CVSS 8.8 rating, though no public exploit has been identified at time of analysis and CISA SSVC marks exploitation status as 'none'. Code execution is confined to the renderer sandbox, requiring chaining with a sandbox escape for full system compromise.

Technical ContextAI

The vulnerability resides in Chrome DevTools, the browser's built-in developer instrumentation suite that parses untrusted HTML, JavaScript, and protocol messages from inspected pages. CWE-125 (Out-of-bounds Read) indicates a memory boundary violation where DevTools reads past the end of an allocated buffer when processing attacker-controlled input from a crafted HTML page; on Chromium architectures this read primitive has historically been chainable into arbitrary code execution by leaking pointers and corrupting adjacent V8 or Blink heap structures. Affected builds are all Chrome Stable channel releases prior to 149.0.7827.53 across desktop platforms, as reflected in the EUVD advisory.

RemediationAI

Upgrade Google Chrome to version 149.0.7827.53 or later on all desktop platforms - this is the vendor-released patch published in the June 2026 Chrome Stable channel update (https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html). In enterprise environments, force a browser restart via group policy to ensure the new binary loads, since Chrome only activates updates after relaunch. As a temporary compensating control for users who cannot update immediately, disable or restrict DevTools access via the DeveloperToolsAvailability enterprise policy (set to DeveloperToolsDisallowed) - this prevents the vulnerable code path from being reachable, with the trade-off that legitimate web developers lose their inspection tooling. Also track Chromium-based browsers (Edge, Brave, Opera) for their corresponding security releases, and monitor https://issues.chromium.org/issues/501878477 for public disclosure details once Google unrestricts it.