OnlyFm252
Windows SMB

CVE-2021-36960 — Windows SMB Information Disclosure Vulnerability

Important CVSS 7.5 EPSS 0.02883 2021-09 archive

Executive Summary

None

Overview

7.5
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
Category Information Disclosure
Released Sep 14 2021
Last Updated Sep 14 2021
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.02883 — 0.85044 percentile
NVD CVSS 7.5 HIGH — matches MSRC

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
None
AVAILABILITY
None
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 6.5

EPSS Score

0.02883
probability of exploitation in the next 30 days
0.85044 percentile - updated 2026-06-21
View on FIRST.org

Affected Products

28 affected products
Product KB Article Severity Impact Restart Required
Windows 10 for 32-bit Systems 5005569 (Security Update) Important Information Disclosure Yes
Windows 10 for x64-based Systems 5005569 (Security Update) Important Information Disclosure Yes
Windows 10 Version 1607 for 32-bit Systems 5005573 (Security Update) Important Information Disclosure Yes
Windows 10 Version 1607 for x64-based Systems 5005573 (Security Update) Important Information Disclosure Yes
Windows 10 Version 1809 for 32-bit Systems 5005568 (Security Update) Important Information Disclosure Yes
Windows 10 Version 1809 for ARM64-based Systems 5005568 (Security Update) Important Information Disclosure Yes
Windows 10 Version 1809 for x64-based Systems 5005568 (Security Update) Important Information Disclosure Yes
Windows 10 Version 1909 for 32-bit Systems 5005566 (Security Update) Important Information Disclosure Yes
Windows 10 Version 1909 for ARM64-based Systems 5005566 (Security Update) Important Information Disclosure Yes
Windows 10 Version 1909 for x64-based Systems 5005566 (Security Update) Important Information Disclosure Yes
Windows 10 Version 2004 for 32-bit Systems 5005565 (Security Update) Important Information Disclosure Yes
Windows 10 Version 2004 for ARM64-based Systems 5005565 (Security Update) Important Information Disclosure Yes
Windows 10 Version 2004 for x64-based Systems 5005565 (Security Update) Important Information Disclosure Yes
Windows 10 Version 20H2 for 32-bit Systems 5005565 (Security Update) Important Information Disclosure Yes
Windows 10 Version 20H2 for ARM64-based Systems 5005565 (Security Update) Important Information Disclosure Yes
Windows 10 Version 20H2 for x64-based Systems 5005565 (Security Update) Important Information Disclosure Yes
Windows 10 Version 21H1 for 32-bit Systems 5005565 (Security Update) Important Information Disclosure Yes
Windows 10 Version 21H1 for ARM64-based Systems 5005565 (Security Update) Important Information Disclosure Yes
Windows 10 Version 21H1 for x64-based Systems 5005565 (Security Update) Important Information Disclosure Yes
Windows 7 for 32-bit Systems Service Pack 1 5005633 (Monthly Rollup) 5005615 (Security Only) Important Information Disclosure 5005088 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C 6.1.7601.25712 Yes 5005633 5005615 Windows 7 for x64-based Systems Service Pack 1 5005633 (Monthly Rollup) 5005615 (Security Only) Important Information Disclosure 5005088 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C 6.1.7601.25712 Yes 5005633 5005615 Windows 8.1 for 32-bit systems 5005613 (Monthly Rollup) 5005627 (Security Only) Important Information Disclosure 5005076 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C 6.3.9600.20120 Yes 5005613 5005627 Windows 8.1 for x64-based systems 5005613 (Monthly Rollup) 5005627 (Security Only) Important Information Disclosure 5005076 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C 6.3.9600.20120 Yes 5005613 5005627 Windows RT 8.1 5005613 (Monthly Rollup) Important Information Disclosure Yes
Windows Server 2008 R2 for x64-based Systems Service Pack 1 5005633 (Monthly Rollup) 5005615 (Security Only) Important Information Disclosure 5005088 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C 6.1.7601.25712 Yes 5005633 5005615 Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 5005633 (Monthly Rollup) 5005615 (Security Only) Important Information Disclosure 5005088 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C 6.1.7601.25712 Yes 5005633 5005615 Windows Server 2012 5005623 (Monthly Rollup) 5005607 (Security Only) Important Information Disclosure 5005094 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C 6.2.9200.23462 Yes 5005623 5005607 Windows Server 2012 (Server Core installation) 5005623 (Monthly Rollup) 5005607 (Security Only) Important Information Disclosure 5005094 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C 6.2.9200.23462 Yes 5005623 5005607 Windows Server 2012 R2 5005613 (Monthly Rollup) 5005627 (Security Only) Important Information Disclosure 5005076 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C 6.3.9600.20120 Yes 5005613 5005627 Windows Server 2012 R2 (Server Core installation) 5005613 (Monthly Rollup) 5005627 (Security Only) Important Information Disclosure 5005076 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C 6.3.9600.20120 Yes 5005613 5005627 Windows Server 2016 5005573 (Security Update) Important Information Disclosure Yes
Windows Server 2016 (Server Core installation) 5005573 (Security Update) Important Information Disclosure Yes
Windows Server 2019 5005568 (Security Update) Important Information Disclosure Yes
Windows Server 2019 (Server Core installation) 5005568 (Security Update) Important Information Disclosure Yes
Windows Server 2022 5005575 (Security Update) Important Information Disclosure Yes
Windows Server 2022 (Server Core installation) 5005575 (Security Update) Important Information Disclosure Yes
Windows Server, version 2004 (Server Core installation) 5005565 (Security Update) Important Information Disclosure Yes
Windows Server, version 20H2 (Server Core Installation) 5005565 (Security Update) Important Information Disclosure Yes

Patches

7 patches
Article Type Restart
5005569 Security Update Yes
5005573 Security Update Yes
5005568 Security Update Yes
5005566 Security Update Yes
5005565 Security Update Yes
5005613 Monthly Rollup Yes
5005575 Security Update Yes

Known Exploits

Acknowledgments

None

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