Microsoft Windows
CVE-2020-1136 — Media Foundation Memory Corruption Vulnerability
Executive Summary
A memory corruption vulnerability exists when Windows Media Foundation improperly handles objects in memory. An attacker who successfully exploited the vulnerability could install programs; view, change, or delete data; or create new accounts with full user rights. There are multiple ways an attacker could exploit the vulnerability, such as by convincing a user to open a specially crafted document, or by convincing a user to visit a malicious webpage. The security update addresses the vulnerability by correcting how Windows Media Foundation handles objects in memory.
Overview
7.8
CVSS HIGH
Critical
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Proof-of-Concept
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 7.0
EPSS Score
0.04681
probability of exploitation in the next 30 days
0.90597 percentile - updated 2026-06-21
View on FIRST.org
Affected Products
27 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Windows 10 for 32-bit Systems | 4556826 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 for x64-based Systems | 4556826 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1607 for 32-bit Systems | 4556813 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1607 for x64-based Systems | 4556813 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1709 for 32-bit Systems | 4556812 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1709 for ARM64-based Systems | 4556812 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1709 for x64-based Systems | 4556812 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1803 for 32-bit Systems | 4556807 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1803 for ARM64-based Systems | 4556807 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1803 for x64-based Systems | 4556807 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1809 for 32-bit Systems | 4551853 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1809 for ARM64-based Systems | 4551853 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1809 for x64-based Systems | 4551853 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1903 for 32-bit Systems | 4556799 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1903 for ARM64-based Systems | 4556799 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1903 for x64-based Systems | 4556799 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1909 for 32-bit Systems | 4556799 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1909 for ARM64-based Systems | 4556799 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1909 for x64-based Systems | 4556799 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 8.1 for 32-bit systems 4556846 (Monthly Rollup) 4556853 (Security Only) Critical Remote Code Execution 4550961 Base: 7.8 Temporal: 7.0 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows 8.1 for x64-based systems 4556846 (Monthly Rollup) 4556853 (Security Only) Critical Remote Code Execution 4550961 Base: 7.8 Temporal: 7.0 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows RT 8.1 | 4556846 (Monthly Rollup) |
Critical | Remote Code Execution | Yes |
| Windows Server 2012 R2 4556846 (Monthly Rollup) 4556853 (Security Only) Critical Remote Code Execution 4550961 Base: 7.8 Temporal: 7.0 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2012 R2 (Server Core installation) 4556846 (Monthly Rollup) 4556853 (Security Only) Critical Remote Code Execution 4550961 Base: 7.8 Temporal: 7.0 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2016 | 4556813 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2016 (Server Core installation) | 4556813 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2019 | 4551853 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2019 (Server Core installation) | 4551853 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server, version 1803 (Server Core Installation) | 4556807 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server, version 1903 (Server Core installation) | 4556799 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server, version 1909 (Server Core installation) | 4556799 (Security Update) |
Critical | Remote Code Execution | Yes |
Patches
7 patches
| Article | Type | Restart |
|---|---|---|
4556826 |
Security Update | Yes |
4556813 |
Security Update | Yes |
4556812 |
Security Update | Yes |
4556807 |
Security Update | Yes |
4551853 |
Security Update | Yes |
4556799 |
Security Update | Yes |
4556846 |
Monthly Rollup | Yes |
Known Exploits
No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.
Acknowledgments
References
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