dbcve.org
Windows 10 1607Operating system · Microsoft

CVE-2026-50655

HIGH · 7.8 CVSS v3.1 Published 2026-07-14
Fix available
A fix is available. Upgrade to 10.0.14393.9339 / 10.0.17763.9020 or later.
See remediation →
81/100
Remediation priority · High
No privileges 5 weeks old

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

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

In the news

Third-party coverage
Trending covered by 1 outlet this week · latest 1mo ago

Surfaced from public web coverage — external links open in a new tab.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

A heap-based buffer overflow vulnerability exists in Windows Media that allows an unauthorized local attacker to execute arbitrary code. The vulnerability stems from improper bounds checking when processing media data, enabling memory corruption that can be leveraged for code execution.

MitigationApply the relevant Microsoft security update for Windows Media components. Prioritize patching systems where untrusted users have local access, as the CVSS vector indicates local attack complexity.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Windows 10 1607Operating system
Affected:< 10.0.14393.9339
Windows 10 1809Operating system
Affected:< 10.0.17763.9020
Windows 10 21h2Operating system
Affected:< 10.0.19044.7548
Windows 10 22h2Operating system
Affected:< 10.0.19045.7548
Windows 11 24h2Operating system
Affected:< 10.0.26100.8875
Windows 11 25h2Operating system
Affected:< 10.0.26200.8875
Windows 11 26h1Operating system
Affected:< 10.0.28000.2525
Windows Server 2016Operating system
Affected:< 10.0.14393.9339

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Retrieve Windows version and build number
    Open Command Prompt and run 'winver' or 'systeminfo | findstr /B /C:"OS Name" /C:"OS Version"'. Alternatively, run 'reg query "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion" /v CurrentBuild' to get the build number.
    Affected if The displayed build number falls below any of these thresholds: 14393.9339 (Windows 10 1607/Server 2016), 17763.9020 (Windows 10 1809), 19044.7548 (Windows 10 21h2), 19045.7548 (Windows 10 22h2), 26100.8875 (Windows 11 24h2), 26200.8875 (Windows 11 25h2), or 28000.2525 (Windows 11 26h1).
  2. Confirm Windows edition and mapping to affected range
    Run 'systeminfo' and note the full OS name and version string. Identify whether the system is Windows 10 1607, 1809, 21h2, 22h2; Windows 11 24h2, 25h2, 26h1; or Windows Server 2016.
    Affected if The identified edition matches one of the affected products and its build number is lower than the corresponding threshold for that edition.
  3. Verify Windows Media component presence
    Open Control Panel > Programs and Features > Turn Windows features on or off. Look for 'Windows Media Player' or 'Windows Media Center' entries under 'Media Features'. Alternatively, check the registry at 'HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup\OptionalFeatures' for values related to MediaPlayer.
    Affected if Windows Media Player or Windows Media Center is installed and enabled on the system.
  4. Confirm vulnerability applicability
    Cross-reference the confirmed Windows edition and build number from step 1 with the affected version ranges. Ensure both conditions are met: (1) the build is below the threshold for that edition, AND (2) Windows Media components are present.
    Affected if The system runs a vulnerable Windows edition/build AND has Windows Media components enabled, placing it within the affected version range.

A system is affected if it runs any of the listed Windows 10, Windows 11, or Windows Server 2016 versions with a build number below the specified threshold and has Windows Media components installed.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Upgrade available Upgrade to 10.0.14393.9339 / 10.0.17763.9020 / 10.0.19044.7548 or later
Fixed in 10.0.14393.933910.0.17763.902010.0.19044.7548
Interim mitigation

Apply the relevant Microsoft security update for Windows Media components. Prioritize patching systems where untrusted users have local access, as the CVSS vector indicates local attack complexity.

Fix this in Windows 10 1607 Scoped from the published advisory
  • Consultation2.0 h
  • Implementation3.0 h
  • Testing4.0 h
  • Review / QA2.0 h
11.0 hours of engineering $1,900
Get the upgrade done

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Scan for this in your stack

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dbcve dependency scanner

Check whether your project pulls in CVE-2026-50655 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-50655 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data