Description
Uninitialized Use in Cast in Google Chrome prior to 150.0.7871.47 allowed an attacker on the local network segment to obtain potentially sensitive information from process memory via malicious network traffic. (Chromium security severity: Medium)
Published: 2026-06-30
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

An uninitialized cast in Google Chrome versions prior to 150.0.7871.47 permits an attacker on the same local network segment to read uninitialized memory and extract potentially sensitive data from process memory. The flaw is a use‑of‑uninitialized‑data weakness (CWE‑457) that results in a disclosure of confidential information without requiring authentication.

Affected Systems

The vulnerability affects any machine running Google Chrome browsers with build numbers older than 150.0.7871.47. No operating‑system or platform restrictions are noted; any device on the local network where this Chrome version is installed is potentially impacted.

Risk and Exploitability

The CVSS score of 6.5 indicates a medium severity risk. EPSS data is unavailable, and the vulnerability is not listed in CISA’s KEV catalog. Exploitation requires an attacker to be on the same local network segment and to send specially crafted traffic that triggers the uninitialized cast, making it a local‑segment vulnerability with limited public exploitation evidence.

Generated by OpenCVE AI on July 1, 2026 at 14:13 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Update to Chrome version 150.0.7871.47 or later.
  • Restrict the device to a network segment that excludes untrusted hosts or apply VLAN segmentation.
  • Configure host‑based firewall rules to block or monitor inbound traffic patterns that could trigger the uninitialized cast.
  • Investigate application memory usage and implement defensive programming practices to avoid use of uninitialized data where feasible.

Generated by OpenCVE AI on July 1, 2026 at 14:13 UTC.

Tracking

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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

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

Type Values Removed Values Added
Title Local Network Uninitialized Cast Leading to Sensitive Information Leakage in Google Chrome

Wed, 01 Jul 2026 07:30:00 +0000

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

Wed, 01 Jul 2026 06:00:00 +0000

Type Values Removed Values Added
Title Local Network Data Leak via Uninitialized Cast in Chrome

Wed, 01 Jul 2026 03:15:00 +0000

Type Values Removed Values Added
Title Local Network Data Leak via Uninitialized Cast in Chrome

Wed, 01 Jul 2026 02:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


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

Type Values Removed Values Added
Description Uninitialized Use in Cast in Google Chrome prior to 150.0.7871.47 allowed an attacker on the local network segment to obtain potentially sensitive information from process memory via malicious network traffic. (Chromium security severity: Medium)
Weaknesses CWE-457
References

cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-07-01T01:26:17.829Z

Reserved: 2026-06-29T23:03:57.305Z

Link: CVE-2026-13940

cve-icon Vulnrichment

Updated: 2026-07-01T01:26:12.107Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-01T14:15:05Z

Weaknesses
  • CWE-457

    Use of Uninitialized Variable