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Severity by source

Vendor (microsoft) PRIMARY
MEDIUM
qualitative
NVD
7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CIRCL (temporal)
4.6 MEDIUM
cvss
vuln.today AI
7.5 HIGH

Network-reachable media parsing leak with no auth or interaction advertised; pure confidentiality loss (C:H) and no integrity or availability impact, matching NVD.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (microsoft).

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

5
Analysis Generated
Jul 22, 2026 - 17:02 vuln.today
Severity Changed
Jul 20, 2026 - 14:07 NVD
MEDIUM HIGH
CVSS changed
Jul 20, 2026 - 14:07 NVD
5.3 (MEDIUM) 7.5 (HIGH)
CVE Published
Jul 14, 2026 - 17:07 nvd
HIGH 7.5
CVE Published
Jul 14, 2026 - 17:07 nvd
MEDIUM 5.3

DescriptionNVD

Exposure of sensitive information to an unauthorized actor in Windows Media allows an unauthorized attacker to disclose information over a network.

AnalysisAI

Information disclosure in the Windows Media component of Microsoft Windows (Windows 10 1809/21H2/22H2, Windows 11 24H2/25H2/26H1, and Windows Server 2019/2022/2025) allows a remote, unauthenticated attacker to read sensitive information over a network. CVSS 3.1 scores this 7.5 (C:H/I:N/A:N), reflecting a pure confidentiality breach with no integrity or availability impact. There is no public exploit identified at time of analysis, and SSVC rates exploitation as none with partial technical impact; EPSS is a modest 0.58% (44th percentile).

Technical ContextAI

The flaw resides in Windows Media, the multimedia handling stack of the Windows operating system responsible for parsing, decoding, and streaming audio/video content. The root cause is classified as CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor), meaning the component returns or leaks data - such as uninitialized memory contents, buffer remnants, or protected internal state - to a party not authorized to receive it. The CPE set confirms this is OS-native code shipped across the full modern Windows client and server line (Windows 10 1809 through Windows 11 26H1, and Windows Server 2019/2022/2025, including Server Core installations), rather than a third-party add-on. The network attack vector (AV:N) implies the leak is reachable through media content or a media-related network service/protocol without local access.

RemediationAI

Apply the Microsoft security update for your specific Windows edition, which raises the build to at least the fixed version listed in the advisory (e.g., 10.0.17763.9020 for Windows 10 1809 / Server 2019, 10.0.20348.5386 for Server 2022, 10.0.26100.8875 for Windows 11 24H2, 10.0.26100.33158 for Server 2025, 10.0.28000.2269 for Windows 11 26H1); consult the MSRC guide at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50415 for the exact KB per build. This is a Patch available per vendor advisory (Vendor-released patch, exact build numbers above). If patching must be delayed, reduce exposure by restricting untrusted media: avoid opening or streaming media files from untrusted sources, and where feasible limit network exposure of media-handling services and block untrusted inbound media streams at the network perimeter - the trade-off is potential disruption to legitimate media/streaming workflows and no guarantee of full coverage, so patching remains the only complete fix.

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CVE-2026-50415 vulnerability details – vuln.today

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