OnlyFm252
Windows Print Spooler Components

CVE-2021-36958 — Windows Print Spooler Remote Code Execution Vulnerability

Important CVSS 7.8 EPSS 0.31729 📢 Publicly disclosed 2021-08 archive

Executive Summary

A remote code execution vulnerability exists when the Windows Print Spooler service improperly performs privileged file operations. An attacker who successfully exploited this vulnerability could run arbitrary code with SYSTEM privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

Overview

7.8
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
More Likely
MS Exploit Likelihood
Category Remote Code Execution
Released Aug 10 2021
Last Updated Aug 10 2021
Publicly Disclosed Yes
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.31729 — 0.98068 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:F/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
Functional
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 7.2

EPSS Score

0.31729
probability of exploitation in the next 30 days
0.98068 percentile - updated 2026-06-21
View on FIRST.org

Affected Products

26 affected products
Product KB Article Severity Impact Restart Required
Windows 10 for 32-bit Systems 5005569 (Security Update) Important Remote Code Execution Yes
Windows 10 for x64-based Systems 5005569 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 1607 for 32-bit Systems 5005573 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 1607 for x64-based Systems 5005573 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 1809 for 32-bit Systems 5005568 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 1809 for ARM64-based Systems 5005568 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 1809 for x64-based Systems 5005568 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 1909 for 32-bit Systems 5005566 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 1909 for ARM64-based Systems 5005566 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 1909 for x64-based Systems 5005566 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 2004 for 32-bit Systems 5005565 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 2004 for ARM64-based Systems 5005565 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 2004 for x64-based Systems 5005565 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 20H2 for 32-bit Systems 5005565 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 20H2 for ARM64-based Systems 5005565 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 20H2 for x64-based Systems 5005565 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 21H1 for 32-bit Systems 5005565 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 21H1 for ARM64-based Systems 5005565 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 21H1 for x64-based Systems 5005565 (Security Update) Important Remote Code Execution Yes
Windows 7 for 32-bit Systems Service Pack 1 5005633 (Monthly Rollup) 5005615 (Security Only) Important Remote Code Execution 5005088 Base: 7.8 Temporal: 7.2 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/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 Remote Code Execution 5005088 Base: 7.8 Temporal: 7.2 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/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 Remote Code Execution 5005076 Base: 7.8 Temporal: 7.2 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C 6.3.9600.20120 Yes 5005613 5005627 5005613 Windows 8.1 for x64-based systems 5005613 (Monthly Rollup) 5005627 (Security Only) Important Remote Code Execution 5005076 Base: 7.8 Temporal: 7.2 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C 6.3.9600.20120 Yes 5005613 5005627 5005613 Windows RT 8.1 5005613 (Monthly Rollup) Important Remote Code Execution Yes
Windows Server 2008 for 32-bit Systems Service Pack 2 5005606 (Monthly Rollup) 5005618 (Security Only) Important Remote Code Execution 5005090 Base: 7.8 Temporal: 7.2 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C 6.0.6003.21218 Yes 5005606 5005618 Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 5005606 (Monthly Rollup) 5005618 (Security Only) Important Remote Code Execution 5005090 Base: 7.8 Temporal: 7.2 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C 6.0.6003.21218 Yes 5005606 5005618 Windows Server 2008 for x64-based Systems Service Pack 2 5005606 (Monthly Rollup) 5005618 (Security Only) Important Remote Code Execution 5005090 Base: 7.8 Temporal: 7.2 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C 6.0.6003.21218 Yes 5005606 5005618 Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 5005606 (Monthly Rollup) 5005618 (Security Only) Important Remote Code Execution 5005090 Base: 7.8 Temporal: 7.2 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C 6.0.6003.21218 Yes 5005606 5005618 Windows Server 2008 R2 for x64-based Systems Service Pack 1 5005633 (Monthly Rollup) 5005615 (Security Only) Important Remote Code Execution 5005088 Base: 7.8 Temporal: 7.2 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/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 Remote Code Execution 5005088 Base: 7.8 Temporal: 7.2 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C 6.1.7601.25712 Yes 5005633 5005615 Windows Server 2012 5005623 (Monthly Rollup) 5005607 (Security Only) Important Remote Code Execution 5005094 Base: 7.8 Temporal: 7.2 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C 6.2.9200.23462 Yes 5005623 5005607 Windows Server 2012 (Server Core installation) 5005623 (Monthly Rollup) 5005607 (Security Only) Important Remote Code Execution 5005094 Base: 7.8 Temporal: 7.2 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C 6.2.9200.23462 Yes 5005623 5005607 Windows Server 2012 R2 5005613 (Monthly Rollup) 5005627 (Security Only) Important Remote Code Execution 5005076 Base: 7.8 Temporal: 7.2 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C 6.3.9600.20120 Yes 5005613 5005627 5005613 Windows Server 2012 R2 (Server Core installation) 5005613 (Monthly Rollup) 5005627 (Security Only) Important Remote Code Execution 5005076 Base: 7.8 Temporal: 7.2 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C 6.3.9600.20120 Yes 5005613 5005627 5005613 Windows Server 2016 5005573 (Security Update) Important Remote Code Execution Yes
Windows Server 2016 (Server Core installation) 5005573 (Security Update) Important Remote Code Execution Yes
Windows Server 2019 5005568 (Security Update) Important Remote Code Execution Yes
Windows Server 2019 (Server Core installation) 5005568 (Security Update) Important Remote Code Execution Yes
Windows Server, version 2004 (Server Core installation) 5005565 (Security Update) Important Remote Code Execution Yes
Windows Server, version 20H2 (Server Core Installation) 5005565 (Security Update) Important Remote Code Execution Yes

Patches

6 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

Known Exploits

Acknowledgments

Victor Mata

On This Page