# CVE-2026-96952: Microsoft Windows Media Foundation Remote Code Execution Vulnerability

> Heap-based buffer overflow in Windows Media Foundation allows remote attackers to execute arbitrary code over the network.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 13 Oct 2026
- **Updated:** 29 Oct 2026
- **Also known as:** GHSA-2j8g-6m5w-xrvc

## What is CVE-2026-96952?

CVE-2026-96952 is a high-severity memory corruption vulnerability in Microsoft Windows 10 1809, published on 13 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

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

Weakness: CWE-122 (Heap-based Buffer Overflow)

## Which versions are affected by CVE-2026-96952?

It affects 11 products.


Products: Microsoft Windows 10 1809, Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, Microsoft Windows 11 23h2, Microsoft Windows 11 24h2, Microsoft Windows 11 25h2, Microsoft Windows 11 26h1, Microsoft Windows 11 26h2, Microsoft Windows Server 2019, Microsoft Windows Server 2022, Microsoft Windows Server 2025.

## How do I fix CVE-2026-96952?

No fix has been published for CVE-2026-96952 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-96952 being exploited?

There is no known exploitation of CVE-2026-96952 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft Windows 10 1809

- [CVE-2024-29988](https://insights.sbomify.com/CVE-2024-29988/): Microsoft SmartScreen Prompt Security Feature Bypass (high 8.8, exploited in the wild)
- [CVE-2024-21412](https://insights.sbomify.com/CVE-2024-21412/): Microsoft Windows Internet Shortcut Files Security Feature Bypass (high 8.1, exploited in the wild)
- [CVE-2025-62221](https://insights.sbomify.com/CVE-2025-62221/): Microsoft Windows Use After Free (high 7.8, exploited in the wild)
- [CVE-2025-30400](https://insights.sbomify.com/CVE-2025-30400/): Microsoft Windows DWM Core Library Use-After-Free (high 7.8, exploited in the wild)
- [CVE-2024-21338](https://insights.sbomify.com/CVE-2024-21338/): Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control (high 7.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-96952 and fix it if it is affected.

What it is: CVE-2026-96952 is a high-severity memory corruption vulnerability in Microsoft Windows 10 1809, published on 13 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-96952 in the wild and no public exploit code.

Affected product: Microsoft Windows 10 1809. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-96952/ (Markdown: https://insights.sbomify.com/CVE-2026-96952/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-96952
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-96952
- OSV: https://osv.dev/vulnerability/CVE-2026-96952

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-96952/
Summaries are generated and may contain mistakes; the official description above is the record.