Cyber Resilience

CVE-2026-7336

High

Published: 28 April 2026

Published
28 April 2026
Modified
30 April 2026
KEV Added
—
Patch
—
CVSS Score v3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.0043 34.7th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-7336 is a high-severity Use After Free (CWE-416) vulnerability in Google Chrome. Its CVSS base score is 8.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Client Execution (T1203); ranked at the 34.7th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-2 (Flaw Remediation) and SC-39 (Process Isolation).

Deeper analysis

CVE-2026-7336 is a use-after-free vulnerability (CWE-416) in the WebRTC component of Google Chrome prior to version 147.0.7727.138. Published on 2026-04-28, it carries a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) and is rated High severity by the Chromium security team.

A remote attacker can exploit this flaw by luring a user to visit a crafted HTML page, triggering the use-after-free condition in WebRTC and enabling arbitrary code execution within the browser's sandbox. No special privileges are required, though user interaction is necessary to access the malicious content.

Mitigation is available via the Google Chrome stable channel update to version 147.0.7727.138 or later. Additional details on the patch and issue are provided in the Chrome Releases blog at https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop_28.html and the Chromium bug tracker at https://issues.chromium.org/issues/500767595.

EU & UK References

Vulnerability details

Use after free in WebRTC in Google Chrome prior to 147.0.7727.138 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

CWE(s)
CWE-416

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
attack.mitre.org →
T1189 Drive-by Compromise Initial Access
Adversaries may gain access to a system through a user visiting a website over the normal course of browsing.
attack.mitre.org →
Why these techniques?

Use-after-free in Chrome WebRTC enables arbitrary code execution upon visiting a crafted HTML page, directly mapping to Exploitation for Client Execution (T1203) and facilitating Drive-by Compromise (T1189).

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2026-7357Same product: Apple Macos
CVE-2026-7342Same product: Apple Macos
CVE-2026-4680Same product: Apple Macos
CVE-2026-7355Same product: Apple Macos
CVE-2026-5284Same product: Apple Macos
CVE-2026-9992Same product: Apple Macos
CVE-2026-9118Same product: Apple Macos
CVE-2026-7974Same product: Apple Macos
CVE-2026-7352Same product: Apple Macos
CVE-2026-8521Same product: Apple Macos

Affected Assets

google
chrome
≤ 147.0.7727.138

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-2 Flaw Remediation good match
prevent

Timely flaw remediation through patching Chrome to version 147.0.7727.138 or later directly eliminates the use-after-free vulnerability in WebRTC.

SI-16 Memory Protection partial match
prevent

Memory protection mechanisms like ASLR, DEP, and stack canaries mitigate exploitation of the use-after-free condition even if unpatched.

SC-39 Process Isolation partial match
prevent

Process isolation via browser sandboxing confines arbitrary code execution from the WebRTC vulnerability to the renderer process, limiting potential impact.

References