Important CVSS 7.8 EPSS 0.99374 ⚠️ Exploited in the wild 📢 Publicly disclosed 2022-05 archive

Executive Summary

A remote code execution vulnerability exists when MSDT is called using the URL protocol from a calling application such as Word. An attacker who successfully exploits this vulnerability can run arbitrary code with the privileges of the calling application. The attacker can then install programs, view, change, or delete data, or create new accounts in the context allowed by the user’s rights. Please see the MSRC Blog Entry for important information about steps you can take to protect your system from this vulnerability.

Overview

7.8
CVSS HIGH
Important
MS Severity
Exploited
MS Exploit Status
Exploitation Detected
MS Exploit Likelihood
Category Remote Code Execution
Released May 10 2022
Last Updated May 10 2022
Publicly Disclosed Yes
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.99374 — 0.99935 percentile
NVD CVSS 7.8 HIGH — matches MSRC

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

0.99374
probability of exploitation in the next 30 days
0.99935 percentile - updated 2026-06-21
View on FIRST.org

Affected Products

25 affected products
Product KB Article Severity Impact Restart Required
Windows 10 for 32-bit Systems 5014710 (Security Update) Important Remote Code Execution Yes
Windows 10 for x64-based Systems 5014710 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 1607 for 32-bit Systems 5014702 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 1607 for x64-based Systems 5014702 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 1809 for 32-bit Systems 5014692 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 1809 for ARM64-based Systems 5014692 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 1809 for x64-based Systems 5014692 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 20H2 for 32-bit Systems 5014699 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 20H2 for ARM64-based Systems 5014699 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 21H1 for 32-bit Systems 5014699 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 21H1 for ARM64-based Systems 5014699 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 21H1 for x64-based Systems 5014699 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 21H2 for 32-bit Systems 5014699 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 21H2 for ARM64-based Systems 5014699 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 21H2 for x64-based Systems 5014699 (Security Update) Important Remote Code Execution Yes
Windows 11 version 21H2 for ARM64-based Systems 5014697 (Security Update) Important Remote Code Execution Yes
Windows 11 version 21H2 for x64-based Systems 5014697 (Security Update) Important Remote Code Execution Yes
Windows 7 for 32-bit Systems Service Pack 1 5014748 (Monthly Rollup) 5014742 (Security Only) Important Remote Code Execution 5014012 Base: 7.8 Temporal: 7.0 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 6.1.7601.25984 Yes 5014748 5014742 Windows 7 for x64-based Systems Service Pack 1 5014748 (Monthly Rollup) 5014742 (Security Only) Important Remote Code Execution 5014012 Base: 7.8 Temporal: 7.0 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 6.1.7601.25984 Yes 5014748 5014742 Windows 8.1 for 32-bit systems 5014738 (Monthly Rollup) 5014746 (Security Only) Important Remote Code Execution 5014011 Base: 7.8 Temporal: 7.0 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 6.3.9600.20402 Yes 5014738 5014746 Windows 8.1 for x64-based systems 5014738 (Monthly Rollup) 5014746 (Security Only) Important Remote Code Execution 5014011 Base: 7.8 Temporal: 7.0 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 6.3.9600.20402 Yes 5014738 5014746 Windows RT 8.1 5014738 (Monthly Rollup) Important Remote Code Execution Yes
Windows Server 2008 R2 for x64-based Systems Service Pack 1 5014748 (Monthly Rollup) 5014742 (Security Only) Important Remote Code Execution 5014012 Base: 7.8 Temporal: 7.0 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 6.1.7601.25984 Yes 5014748 5014742 Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 5014748 (Monthly Rollup) 5014742 (Security Only) Important Remote Code Execution 5014012 Base: 7.8 Temporal: 7.0 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 6.1.7601.25984 Yes 5014748 5014742 Windows Server 2012 5014747 (Monthly Rollup) 5014741 (Security Only) Important Remote Code Execution 5014017 Base: 7.8 Temporal: 7.0 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 6.2.9200.23736 Yes 5014747 5014741 Windows Server 2012 (Server Core installation) 5014747 (Monthly Rollup) 5014741 (Security Only) Important Remote Code Execution 5014017 Base: 7.8 Temporal: 7.0 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 6.2.9200.23736 Yes 5014747 5014741 Windows Server 2012 R2 5014738 (Monthly Rollup) 5014746 (Security Only) Important Remote Code Execution 5014011 Base: 7.8 Temporal: 7.0 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 6.3.9600.20402 Yes 5014738 5014746 Windows Server 2012 R2 (Server Core installation) 5014738 (Monthly Rollup) 5014746 (Security Only) Important Remote Code Execution 5014011 Base: 7.8 Temporal: 7.0 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 6.3.9600.20402 Yes 5014738 5014746 Windows Server 2016 5014702 (Security Update) Important Remote Code Execution Yes
Windows Server 2016 (Server Core installation) 5014702 (Security Update) Important Remote Code Execution Yes
Windows Server 2019 5014692 (Security Update) Important Remote Code Execution Yes
Windows Server 2019 (Server Core installation) 5014692 (Security Update) Important Remote Code Execution Yes
Windows Server 2022 5014678 (Security Update) Important Remote Code Execution Yes
Windows Server 2022 (Server Core installation) 5014678 (Security Update) Important Remote Code Execution Yes
Windows Server, version 20H2 (Server Core Installation) 5014699 (Security Update) Important Remote Code Execution Yes

Patches

7 patches
Article Type Restart
5014710 Security Update Yes
5014702 Security Update Yes
5014692 Security Update Yes
5014699 Security Update Yes
5014697 Security Update Yes
5014738 Monthly Rollup Yes
5014678 Security Update Yes

Known Exploits

Acknowledgments