Summary
Impact: Remote Code Execution. Microsoft rating: Important. Not known to be exploited, publicly disclosed before the fix — Exploitation More Likely. Customer action: Required.
Details
Why did the security impact change from elevation of privilege to remote code execution?
We became aware of a remote attack scenario for this vulnerability and revised our assessment accordingly.
No, the vulnerability existed before the July 13, 2021 security update. We recommend that Microsoft customers install the latest security updates.
Please see KB5005652.
Security updates
10.0.17763.2114 — https://support.microsoft.com/help/5005030
10.0.18363.1734 — https://support.microsoft.com/help/5005031
10.0.19043.1165 — https://support.microsoft.com/help/5005033
10.0.10240.19022 — https://support.microsoft.com/help/5005040
10.0.14393.4583 — https://support.microsoft.com/help/5005043
6.1.7601.25685 — https://support.microsoft.com/help/5005088
6.1.7601.25685 — https://support.microsoft.com/help/5005089
6.3.9600.20094 — https://support.microsoft.com/help/5005076
6.3.9600.20094 — https://support.microsoft.com/help/5005106
6.0.6003.21192 — https://support.microsoft.com/help/5005090
6.0.6003.21192 — https://support.microsoft.com/help/5005095
6.2.9200.23435 — https://support.microsoft.com/help/5005099
6.2.9200.23435 — https://support.microsoft.com/help/5005094
Vulnerabilities 1
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High 8.8
Windows Print Spooler Remote Code Execution Vulnerability
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 th…
Revision history
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#2
CVE updated to announce that Microsoft is releasing security updates for all affected versions of Windows to address this vulnerability. Other information has been updated as well, including the following: 1) Impact has been changed to Remote Code Execution 2) Executive Summary has been updated 3) FAQs have been revised.
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#1
Information published.
References
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CVE-2021-34481 Windows Print Spooler Remote Code Execution Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34481
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss