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CVE-2025-49691: Windows Media Allows Remote Code Execution Over a Network

CVE-2025-49691 · published 1 year ago

Summary

A security weakness in Windows Media software could allow an attacker on a nearby network to take control of a computer. This could happen if an attacker sends a malicious file to the computer, and the software doesn't properly check its size. Update Windows Media to the latest version to fix this vulnerability.

What to do

Update microsoft windows_10_1507 to version 10.0.10240.21073 or later.
Update microsoft windows_10_1607 to version 10.0.14393.8246 or later.
Update microsoft windows_10_1809 to version 10.0.17763.7558 or later.
Update microsoft windows_10_21h2 to version 10.0.19044.6093 or later.
Update microsoft windows_10_22h2 to version 10.0.19045.6093 or later.
Update microsoft windows_11_22h2 to version 10.0.22621.5624 or later.
Update microsoft windows_11_23h2 to version 10.0.22631.5624 or later.
Update microsoft windows_11_24h2 to version 10.0.26100.4652 or later.
Update microsoft windows_server_2016 to version 10.0.14393.8246 or later.
Update microsoft windows_server_2019 to version 10.0.17763.7558 or later.
Update microsoft windows_server_2022 to version 10.0.20348.3932 or later.
Update microsoft windows_server_2022_23h2 to version 10.0.25398.1732 or later.
Update microsoft windows_server_2025 to version 10.0.26100.4652 or later.

Affected software

Vendor	Product	Affected versions
microsoft	windows_10_1507	< 10.0.10240.21073 `cpe:2.3:o:microsoft:windows_10_1507:::::::x64:*`
microsoft	windows_10_1607	< 10.0.14393.8246 `cpe:2.3:o:microsoft:windows_10_1607:::::::x64:*`
microsoft	windows_10_1809	< 10.0.17763.7558 `cpe:2.3:o:microsoft:windows_10_1809:::::::x64:*`
microsoft	windows_10_21h2	< 10.0.19044.6093 `cpe:2.3:o:microsoft:windows_10_21h2::::::::`
microsoft	windows_10_22h2	< 10.0.19045.6093 `cpe:2.3:o:microsoft:windows_10_22h2::::::::`
microsoft	windows_11_22h2	< 10.0.22621.5624 `cpe:2.3:o:microsoft:windows_11_22h2::::::::`
microsoft	windows_11_23h2	< 10.0.22631.5624 `cpe:2.3:o:microsoft:windows_11_23h2::::::::`
microsoft	windows_11_24h2	< 10.0.26100.4652 `cpe:2.3:o:microsoft:windows_11_24h2::::::::`
microsoft	windows_server_2016	< 10.0.14393.8246 `cpe:2.3:o:microsoft:windows_server_2016::::::::`
microsoft	windows_server_2019	< 10.0.17763.7558 `cpe:2.3:o:microsoft:windows_server_2019::::::::`
microsoft	windows_server_2022	< 10.0.20348.3932 `cpe:2.3:o:microsoft:windows_server_2022::::::::`
microsoft	windows_server_2022_23h2	< 10.0.25398.1732 `cpe:2.3:o:microsoft:windows_server_2022_23h2::::::::`
microsoft	windows_server_2025	< 10.0.26100.4652 `cpe:2.3:o:microsoft:windows_server_2025::::::::`

Original advisory text

Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code over an adjacent network.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49691 Vendor Advisory

Fix within

Internet-facing 14 days

Internal At next upgrade

Not known to be exploited
Needs hands-on effort to exploit
Gives an attacker full control

Severity

8.0 High

Exploitation

<1% chance of attack within 30 days

Type

CWE-122Heap-based Buffer Overflow

Timeline

Published8 Jul 2025

Updated4 Nov 2026

First seen7 Mar 2026

Sources

CVE-2025-49691 · NVD

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