Windows Remote Procedure Call Runtime
CVE-2021-1660 — Remote Procedure Call Runtime Remote Code Execution Vulnerability
Executive Summary
None
Overview
8.8
CVSS HIGH
Critical
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
Temporal Score: 7.7
EPSS Score
0.02967
probability of exploitation in the next 30 days
0.8546 percentile - updated 2026-06-20
View on FIRST.org
Affected Products
41 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Windows 10 for 32-bit Systems | 4598231 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 for x64-based Systems | 4598231 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1607 for 32-bit Systems | 4598243 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1607 for x64-based Systems | 4598243 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1803 for 32-bit Systems | 4598245 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1803 for ARM64-based Systems | 4598245 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1803 for x64-based Systems | 4598245 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1809 for 32-bit Systems | 4598230 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1809 for ARM64-based Systems | 4598230 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1809 for x64-based Systems | 4598230 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1909 for 32-bit Systems | 4598229 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1909 for ARM64-based Systems | 4598229 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1909 for x64-based Systems | 4598229 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 2004 for 32-bit Systems | 4598242 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 2004 for ARM64-based Systems | 4598242 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 2004 for x64-based Systems | 4598242 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 20H2 for 32-bit Systems | 4598242 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 20H2 for ARM64-based Systems | 4598242 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 20H2 for x64-based Systems | 4598242 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 7 for 32-bit Systems Service Pack 1 | 4598279 (Monthly Rollup) 4598289 (Security Only) |
Critical | Remote Code Execution | Yes |
| Windows 7 for x64-based Systems Service Pack 1 | 4598279 (Monthly Rollup) 4598289 (Security Only) |
Critical | Remote Code Execution | Yes |
| Windows 8.1 for 32-bit systems | 4598285 (Monthly Rollup) 4598275 (Security Only) 4598285 (Monthly Rollup) |
Critical | Remote Code Execution | Yes |
| Windows 8.1 for x64-based systems | 4598285 (Monthly Rollup) 4598275 (Security Only) 4598285 (Monthly Rollup) |
Critical | Remote Code Execution | Yes |
| Windows RT 8.1 | 4598285 (Monthly Rollup) 4598285 (Monthly Rollup) |
Critical | Remote Code Execution | Yes |
| Windows Server 2008 for 32-bit Systems Service Pack 2 | 4598288 (Monthly Rollup) 4598287 (Security Only) |
Critical | Remote Code Execution | Yes |
| Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | 4598288 (Monthly Rollup) 4598287 (Security Only) |
Critical | Remote Code Execution | Yes |
| Windows Server 2008 for x64-based Systems Service Pack 2 | 4598288 (Monthly Rollup) 4598287 (Security Only) |
Critical | Remote Code Execution | Yes |
| Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | 4598288 (Monthly Rollup) 4598287 (Security Only) |
Critical | Remote Code Execution | Yes |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 | 4598279 (Monthly Rollup) 4598289 (Security Only) |
Critical | Remote Code Execution | Yes |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | 4598279 (Monthly Rollup) 4598289 (Security Only) |
Critical | Remote Code Execution | Yes |
| Windows Server 2012 | 4598278 (Monthly Rollup) 4598297 (Security Only) |
Critical | Remote Code Execution | Yes |
| Windows Server 2012 (Server Core installation) | 4598278 (Monthly Rollup) 4598297 (Security Only) |
Critical | Remote Code Execution | Yes |
| Windows Server 2012 R2 | 4598285 (Monthly Rollup) 4598275 (Security Only) 4598285 (Monthly Rollup) |
Critical | Remote Code Execution | Yes |
| Windows Server 2012 R2 (Server Core installation) | 4598285 (Monthly Rollup) 4598275 (Security Only) 4598285 (Monthly Rollup) |
Critical | Remote Code Execution | Yes |
| Windows Server 2016 | 4598243 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2016 (Server Core installation) | 4598243 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2019 | 4598230 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2019 (Server Core installation) | 4598230 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server, version 1909 (Server Core installation) | 4598229 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server, version 2004 (Server Core installation) | 4598242 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server, version 20H2 (Server Core Installation) | 4598242 (Security Update) |
Critical | Remote Code Execution | Yes |
Patches
11 patches
| Article | Type | Restart |
|---|---|---|
4598231 |
Security Update | Yes |
4598243 |
Security Update | Yes |
4598245 |
Security Update | Yes |
4598230 |
Security Update | Yes |
4598229 |
Security Update | Yes |
4598242 |
Security Update | Yes |
4598279 (Monthly Rollup) 4598289 |
Monthly Rollup | Yes |
4598285 (Monthly Rollup) 4598275 (Security Only) 4598285 |
Monthly Rollup | Yes |
4598285 (Monthly Rollup) 4598285 |
Monthly Rollup | Yes |
4598288 (Monthly Rollup) 4598287 |
Monthly Rollup | Yes |
4598278 (Monthly Rollup) 4598297 |
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
Yuki Chen
References
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