Is CVE-2026-50398 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-50398 being exploited in the wild.

How severe is CVE-2026-50398?

High severity, with a CVSS score of 8.8, published 14 July 2026.

Which products and versions are affected?

Microsoft Windows 11 10.0.26100.0 to 10.0.26100.8875; Microsoft Windows Server 2025 10.0.26100.0 to 10.0.26100.33158.

Is there a fix for CVE-2026-50398?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-50398 attacked?

It is attacked over the network, in an operating system.

Am I affected by CVE-2026-50398?

Check whether you run Microsoft Windows 11 or Microsoft Windows Server 2025 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-50398: Microsoft Windows Media race condition privilege escalation

CVE-2026-50398 · Severity: high · CVSS 8.8 · Published 2026-07-14

A security vulnerability exists in Windows Media components used for handling multimedia content on Windows 11 and Windows Server 2025. An authorized user on the network could exploit this flaw to gain higher-level system permissions than they should normally have. This could allow an attacker to take full control of the affected system, potentially leading to data theft or service disruption.

Technologies: Microsoft Windows 11, Microsoft Windows Server 2025. Vendors: Microsoft.

Quick answers

Is CVE-2026-50398 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-50398 being exploited in the wild.
How severe is CVE-2026-50398?: High severity, with a CVSS score of 8.8, published 14 July 2026.
Which products and versions are affected?: Microsoft Windows 11 10.0.26100.0 to 10.0.26100.8875; Microsoft Windows Server 2025 10.0.26100.0 to 10.0.26100.33158.
Is there a fix for CVE-2026-50398?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-50398 attacked?: It is attacked over the network, in an operating system.
Am I affected by CVE-2026-50398?: Check whether you run Microsoft Windows 11 or Microsoft Windows Server 2025 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

This vulnerability is classified as a race condition (CWE-362) and a use-after-free (CWE-416) within the Windows Media component. It occurs due to improper synchronization during concurrent execution using a shared resource. An attacker with low-privileged network access can exploit this flaw without user interaction to achieve local privilege escalation (LPE). The vulnerability impacts Windows 11 (24H2, 25H2, 26H1) and Windows Server 2025. Microsoft has released security updates to address this issue.

Affected products

Microsoft Windows 11 Version 24H2 10.0.26100.0 to 10.0.26100.8875
Microsoft Windows 11 Version 25H2 10.0.26200.0 to 10.0.26200.8875
Microsoft Windows 11 version 26H1 10.0.28000.0 to 10.0.28000.2269
Microsoft Windows Server 2025 10.0.26100.0 to 10.0.26100.33158

Timeline

2026-07-14: disclosed
2026-07-14: advisory

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50398

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