CVE-2026-13940: Uninitialized Use in Cast on 2026-05-14

Published May 14, 2026
·
Updated

Chromium: CVE-2026-13940 Uninitialized Use in Cast

Other sources

This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information.

— Microsoft

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)

— MITRE

Affected Software

4 affected componentsFixes available
Google Chrome<150.0.7871.47
Google Chrome<150.0.7871.47
Microsoft Edge (Chromium-based)<150.0.4078.48
150.0.4078.48
Microsoft Edge<150.0.4078.48

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 150.0.4078.48
  2. Upgrade

    Upgrade Google Chrome / Chromium to a version that resolves this vulnerability.

    Fixed in 150.0.7871.47
  3. Compensating control

    Since Chromium/Chrome versions prior to 150.0.7871.47 may allow an attacker on the local network segment to obtain sensitive information via malicious network traffic, restrict or isolate access from untrusted devices on the local network segment to systems running affected Chrome/Chromium.

Event History

Jun 30, 2026
CVE Published
via MITRE·10:38 PM
Data Sourced
via MITRE·10:38 PM
DescriptionWeakness
Data Sourced
via NVD·11:17 PM
DescriptionSeverityWeaknessAffected Software
Jul 3, 2026
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·02:00 PM
DescriptionAffected Software
Jul 16, 2026
Data Sourced
12:00 AM
SeverityWeakness

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

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Frequently Asked Questions

1

What is the severity of CVE-2026-13940?

CVE-2026-13940 has a medium severity rating of 6.5 according to the CVSS 3.1 score.

2

How do I fix CVE-2026-13940?

Updating to Google Chrome version 150.0.7871.47 or later will mitigate the risk associated with CVE-2026-13940.

3

What software is affected by CVE-2026-13940?

CVE-2026-13940 affects Google Chrome and Microsoft Edge (Chromium-based).

4

What type of vulnerability is CVE-2026-13940?

CVE-2026-13940 is classified as an Uninitialized Use vulnerability.

5

When was CVE-2026-13940 published?

CVE-2026-13940 was published on May 14, 2026.

Company

Resources

Contact

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