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Windows Secure Socket Tunneling Protocol (SSTP)

CVE-2022-44676 — Windows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution Vulnerability

Critical CVSS 8.1 EPSS 0.0107 2022-12 archive

Executive Summary

None

Overview

8.1
CVSS HIGH
Critical
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
Category Remote Code Execution
Released Dec 13 2022
Last Updated Dec 13 2022
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.0107 — 0.60448 percentile
NVD CVSS 8.1 HIGH — matches MSRC

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
ATTACK VECTOR
Network
ATTACK COMPLEXITY
High
PRIVILEGES REQUIRED
None
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 7.1

EPSS Score

0.0107
probability of exploitation in the next 30 days
0.60448 percentile - updated 2026-06-21
View on FIRST.org

Affected Products

29 affected products
Product KB Article Severity Impact Restart Required
Windows 10 for 32-bit Systems 5021243 (Security Update) Critical Remote Code Execution Yes
Windows 10 for x64-based Systems 5021243 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 1607 for 32-bit Systems 5021235 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 1607 for x64-based Systems 5021235 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 1809 for 32-bit Systems 5021237 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 1809 for ARM64-based Systems 5021237 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 1809 for x64-based Systems 5021237 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 20H2 for 32-bit Systems 5021233 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 20H2 for ARM64-based Systems 5021233 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 21H1 for 32-bit Systems 5021233 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 21H1 for ARM64-based Systems 5021233 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 21H1 for x64-based Systems 5021233 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 21H2 for 32-bit Systems 5021233 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 21H2 for ARM64-based Systems 5021233 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 21H2 for x64-based Systems 5021233 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 22H2 for 32-bit Systems 5021233 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 22H2 for ARM64-based Systems 5021233 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 22H2 for x64-based Systems 5021233 (Security Update) Critical Remote Code Execution Yes
Windows 11 version 21H2 for ARM64-based Systems 5021234 (Security Update) Critical Remote Code Execution Yes
Windows 11 version 21H2 for x64-based Systems 5021234 (Security Update) Critical Remote Code Execution Yes
Windows 11 Version 22H2 for ARM64-based Systems 5021255 (Security Update) Critical Remote Code Execution Yes
Windows 11 Version 22H2 for x64-based Systems 5021255 (Security Update) Critical Remote Code Execution Yes
Windows 7 for 32-bit Systems Service Pack 1 5021291 (Monthly Rollup) 5021288 (Security Only) Critical Remote Code Execution 5020000 Base: 8.1 Temporal: 7.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.1.7601.26266 Yes 5021291 5021288 Windows 7 for x64-based Systems Service Pack 1 5021291 (Monthly Rollup) 5021288 (Security Only) Critical Remote Code Execution 5020000 Base: 8.1 Temporal: 7.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.1.7601.26266 Yes 5021291 5021288 Windows 8.1 for 32-bit systems 5021294 (Monthly Rollup) 5021296 (Security Only) Critical Remote Code Execution 5020023 Base: 8.1 Temporal: 7.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.3.9600.20721 Yes 5021294 5021296 Windows 8.1 for x64-based systems 5021294 (Monthly Rollup) 5021296 (Security Only) Critical Remote Code Execution 5020023 Base: 8.1 Temporal: 7.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.3.9600.20721 Yes 5021294 5021296 Windows RT 8.1 5021294 (Monthly Rollup) Critical Remote Code Execution Yes
Windows Server 2008 for 32-bit Systems Service Pack 2 5021289 (Monthly Rollup) 5021293 (Security Only) Critical Remote Code Execution 5020019 Base: 8.1 Temporal: 7.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.0.6003.21815 Yes 5021289 5021293 Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 5021289 (Monthly Rollup) 5021293 (Security Only) Critical Remote Code Execution 5020019 Base: 8.1 Temporal: 7.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.0.6003.21815 Yes 5021289 5021293 Windows Server 2008 for x64-based Systems Service Pack 2 5021289 (Monthly Rollup) 5021293 (Security Only) Critical Remote Code Execution 5020019 Base: 8.1 Temporal: 7.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.0.6003.21815 Yes 5021289 5021293 Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 5021289 (Monthly Rollup) 5021293 (Security Only) Critical Remote Code Execution 5020019 Base: 8.1 Temporal: 7.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.0.6003.21815 Yes 5021289 5021293 Windows Server 2008 R2 for x64-based Systems Service Pack 1 5021291 (Monthly Rollup) 5021288 (Security Only) Critical Remote Code Execution 5020000 Base: 8.1 Temporal: 7.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.1.7601.26266 Yes 5021291 5021288 Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 5021291 (Monthly Rollup) 5021288 (Security Only) Critical Remote Code Execution 5020000 Base: 8.1 Temporal: 7.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.1.7601.26266 Yes 5021291 5021288 Windows Server 2012 5021285 (Monthly Rollup) 5021303 (Security Only) Critical Remote Code Execution 5020009 Base: 8.1 Temporal: 7.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.2.9200.24018 Yes 5021285 5021303 Windows Server 2012 (Server Core installation) 5021285 (Monthly Rollup) 5021303 (Security Only) Critical Remote Code Execution 5020009 Base: 8.1 Temporal: 7.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.2.9200.24018 Yes 5021285 5021303 Windows Server 2012 R2 5021294 (Monthly Rollup) 5021296 (Security Only) Critical Remote Code Execution 5020023 Base: 8.1 Temporal: 7.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.3.9600.20721 Yes 5021294 5021296 Windows Server 2012 R2 (Server Core installation) 5021294 (Monthly Rollup) 5021296 (Security Only) Critical Remote Code Execution 5020023 Base: 8.1 Temporal: 7.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.3.9600.20721 Yes 5021294 5021296 Windows Server 2016 5021235 (Security Update) Critical Remote Code Execution Yes
Windows Server 2016 (Server Core installation) 5021235 (Security Update) Critical Remote Code Execution Yes
Windows Server 2019 5021237 (Security Update) Critical Remote Code Execution Yes
Windows Server 2019 (Server Core installation) 5021237 (Security Update) Critical Remote Code Execution Yes
Windows Server 2022 5021249 (Security Update) Critical Remote Code Execution Yes
Windows Server 2022 (Server Core installation) 5021249 (Security Update) Critical Remote Code Execution Yes

Patches

8 patches
Article Type Restart
5021243 Security Update Yes
5021235 Security Update Yes
5021237 Security Update Yes
5021233 Security Update Yes
5021234 Security Update Yes
5021255 Security Update Yes
5021294 Monthly Rollup Yes
5021249 Security Update Yes

Known Exploits

Acknowledgments

Yuki Chen

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