Description
Use after free in WebUSB in Google Chrome on Mac prior to 150.0.7871.47 allowed a local attacker to execute arbitrary code via a malicious peripheral. (Chromium security severity: Critical)
Published: 2026-06-30
Score: 7.8 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The vulnerability is a use‑after‑free flaw (CWE‑416) in the WebUSB implementation of Google Chrome on macOS. Before build 150.0.7871.47 the bug allows a local attacker to issue commands that free a referenced memory buffer and then cause Chrome to interpret attacker‑controlled data while the buffer is still in use, leading to arbitrary code execution in the context of the user running the browser.

Affected Systems

Google Chrome version 150.0.7871.46 and earlier on macOS installations.

Risk and Exploitability

The CVSS score of 7.8 reflects the severity of the vulnerability, while the EPSS score is below 1 % indicating a low probability of exploitation in the wild. The issue is not listed in the CISA KEV catalog. Based on the description it is inferred that the attacker must have local access to a USB peripheral that can communicate with Chrome’s WebUSB interface; successful exploitation would give code‑execution privileges to the logged‑in user.

Generated by OpenCVE AI on July 31, 2026 at 16:35 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade Chrome to build 150.0.7871.47 or later on all affected macOS systems.
  • Ensure Chrome auto‑update is enabled or regularly check for the latest release to keep the fix installed.
  • Disconnect or avoid using unexplained or non‑essential USB peripherals that could be used to trigger the flaw.

Generated by OpenCVE AI on July 31, 2026 at 16:35 UTC.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
Debian DLA Debian DLA DLA-4672-1 chromium security update
Debian DSA Debian DSA DSA-6378-1 chromium security update
History

Fri, 31 Jul 2026 17:00:00 +0000

Type Values Removed Values Added
Title Use‑After‑Free in Chrome WebUSB Enables Local Code Execution via Malicious USB Peripheral

Sun, 26 Jul 2026 00:15:00 +0000

Type Values Removed Values Added
Title Use‑After‑Free in Chrome WebUSB Enables Local Code Execution via Malicious USB Peripheral

Tue, 21 Jul 2026 18:00:00 +0000

Type Values Removed Values Added
Title Use-After-Free in Chrome WebUSB Enables Local Code Execution via USB

Thu, 16 Jul 2026 01:00:00 +0000

Type Values Removed Values Added
Title Use-After-Free in Chrome WebUSB Enables Local Code Execution via USB

Tue, 14 Jul 2026 12:15:00 +0000

Type Values Removed Values Added
Title Use-after-Free in Chrome WebUSB Allows Local Code Execution via Malicious USB

Sun, 12 Jul 2026 11:30:00 +0000

Type Values Removed Values Added
Title Use-after-Free in Chrome WebUSB Allows Local Code Execution via Malicious USB

Sat, 11 Jul 2026 17:30:00 +0000

Type Values Removed Values Added
Title Chrome WebUSB Use-After-Free Vulnerability Enabling Local Code Execution

Thu, 09 Jul 2026 22:30:00 +0000

Type Values Removed Values Added
Title Chrome WebUSB Use-After-Free Vulnerability Enabling Local Code Execution

Thu, 09 Jul 2026 03:30:00 +0000

Type Values Removed Values Added
Title Chrome WebUSB Use‑After‑Free Enables Local Code Execution

Tue, 07 Jul 2026 16:45:00 +0000

Type Values Removed Values Added
Title Chrome WebUSB Use‑After‑Free Enables Local Code Execution

Mon, 06 Jul 2026 21:15:00 +0000

Type Values Removed Values Added
Title Use-After-Free in WebUSB on macOS Chrome Exploits Local Code Execution

Mon, 06 Jul 2026 08:15:00 +0000

Type Values Removed Values Added
Title Use-After-Free in WebUSB on macOS Chrome Exploits Local Code Execution

Sun, 05 Jul 2026 20:00:00 +0000

Type Values Removed Values Added
Title Chrome WebUSB Use‑After‑Free Enables Local Code Execution via Malicious USB

Sun, 05 Jul 2026 07:45:00 +0000

Type Values Removed Values Added
Title Chrome WebUSB Use‑After‑Free Enables Local Code Execution via Malicious USB

Sun, 05 Jul 2026 00:00:00 +0000

Type Values Removed Values Added
Title Local Code Execution via WebUSB Use‑After‑Free in Chrome on macOS

Sat, 04 Jul 2026 08:30:00 +0000

Type Values Removed Values Added
Title Local Code Execution via WebUSB Use‑After‑Free in Chrome on macOS

Sat, 04 Jul 2026 00:30:00 +0000

Type Values Removed Values Added
Title Local Code Execution via WebUSB Use‑After‑Free in Google Chrome on macOS

Fri, 03 Jul 2026 13:15:00 +0000

Type Values Removed Values Added
Title Local Code Execution via WebUSB Use‑After‑Free in Google Chrome on macOS

Fri, 03 Jul 2026 03:00:00 +0000

Type Values Removed Values Added
Title Chrome WebUSB Use‑After‑Free on macOS Enables Local Code Execution

Thu, 02 Jul 2026 12:15:00 +0000

Type Values Removed Values Added
Title Chrome WebUSB Use‑After‑Free on macOS Enables Local Code Execution

Thu, 02 Jul 2026 01:00:00 +0000

Type Values Removed Values Added
Title Use-After-Free in Chrome WebUSB on macOS Enables Local Code Execution

Wed, 01 Jul 2026 15:00:00 +0000

Type Values Removed Values Added
Title Use-After-Free in Chrome WebUSB on macOS Enables Local Code Execution

Wed, 01 Jul 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/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, 01 Jul 2026 10:30:00 +0000

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

Wed, 01 Jul 2026 08:45:00 +0000

Type Values Removed Values Added
Title Use‑After‑Free in Chrome WebUSB Allows Local Code Execution on macOS

Wed, 01 Jul 2026 00:45:00 +0000

Type Values Removed Values Added
Title Use‑After‑Free in Chrome WebUSB Allows Local Code Execution on macOS

Tue, 30 Jun 2026 23:15:00 +0000

Type Values Removed Values Added
Description Use after free in WebUSB in Google Chrome on Mac prior to 150.0.7871.47 allowed a local attacker to execute arbitrary code via a malicious peripheral. (Chromium security severity: Critical)
Weaknesses CWE-416
References

Subscriptions

Apple Macos
Google Chrome
cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-07-02T03:56:06.840Z

Reserved: 2026-06-29T23:03:15.057Z

Link: CVE-2026-13778

cve-icon Vulnrichment

Updated: 2026-07-01T13:54:53.236Z

cve-icon NVD

Status : Analyzed

Published: 2026-06-30T23:16:52.683

Modified: 2026-07-02T05:16:27.330

Link: CVE-2026-13778

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-31T16:45:03Z

Weaknesses