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Severity by source

Vendor (microsoft) PRIMARY
7.8 HIGH
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vuln.today AI
7.8 HIGH

Local file-parsing overflow needs no privileges (PR:N) but requires the victim to open a file (UI:R, AV:L); memory-corruption code execution yields high C/I/A within the user's context (S:U).

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

Primary rating from Vendor (microsoft).

CVSS VectorVendor: microsoft

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Jul 14, 2026 - 19:49 vuln.today
CVE Published
Jul 14, 2026 - 17:08 nvd
HIGH 7.8

DescriptionCVE.org

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

AnalysisAI

Local code execution in the Windows Media component of supported Windows 10, Windows 11, and Windows Server (2016 through 2025) releases lets an unauthorized attacker run arbitrary code when a victim opens a maliciously crafted media file. The flaw is a heap-based buffer overflow (CWE-122) reported by Microsoft with a vendor patch available; there is no public exploit identified at time of analysis. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Deliver crafted media file to victim
Delivery
User opens or previews file
Exploit
Trigger heap overflow in Windows Media parser
Execution
Corrupt heap and hijack control flow
Impact
Execute arbitrary code as current user

Vulnerability AssessmentAI

Exploitation Exploitation requires a local trigger (AV:L) and mandatory user interaction (UI:R): a user must open or preview an attacker-supplied malicious media file that is parsed by the Windows Media component. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 vector (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H = 7.8) describes a locally-triggered, low-complexity flaw needing no privileges but requiring user interaction, with high impact to all three security properties - a classic 'open a malicious file' code-execution profile. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker crafts a malformed media file that triggers the heap overflow in the Windows Media parser and delivers it via email attachment, a web download, or a network share. When the victim opens or previews the file, attacker-controlled data corrupts the heap and executes code in the context of the current user. …
Remediation Patch available per vendor advisory: apply the Microsoft security update for CVE-2026-50655 referenced at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50655, selecting the KB that matches each affected build (Windows 10 1607/1809/21H2/22H2, Windows 11 24H2/25H2/26H1, and Windows Server 2016/2019/2022/2025 including Server Core). … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, inventory all Windows 10, Windows 11, and Windows Server systems (2016-2025) to identify affected deployments and assess which systems may process media files from external sources. …

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Threat intelligence, references, and detailed analysis are available after sign-in.

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EUVD-2026-44119 vulnerability details – vuln.today

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