Summary
Impact: Remote Code Execution. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?
This vulnerability could be triggered when a user connects a Windows client to a malicious server.
Security updates
10.0.26100.9445 — https://support.microsoft.com/help/5124008
Vulnerabilities 1
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High 8.8
Windows Print Spooler Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows Print Spooler Components allows an unauthorized attacker to execute code over a network.
Revision history
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#1
Information published.
References
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CVE-2026-85877 Windows Print Spooler Remote Code Execution Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85877
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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