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CVE-2026-85877— Windows Print Spooler Remote Code Execution Vulnerability

Quick assessment

Affected
Microsoft Windows 11 Version 24H2
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

这段英文描述的是 Windows 打印后台处理程序（Print Spooler）中的一个安全漏洞。 参考译文： Windows 打印后台处理组件中存在堆缓冲区溢出漏洞，允许未授权的远程攻击者通过网络执行代码。 术语解析与说明： Heap-based buffer overflow：堆缓冲区溢出。这是一种常见的内存安全漏洞类型，发生在堆内存区域。 Windows Print Spooler Components：Windows 打印后台处理程序（或简称“打印后台服务”）。 Unauthorized attacker：

CVSS 8.8 · High EPSS 0.44% · P37

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Microsoft Windows 11 Version 24H2 10.0.26100.0< 10.0.26100.9445 affected
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I. Basic Information for CVE-2026-85877

Vulnerability Information
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Vulnerability Title
Windows Print Spooler Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Heap-based buffer overflow in Windows Print Spooler Components allows an unauthorized attacker to execute code over a network.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft Windows 11 Version 24H2 10.0.26100.0 ~ 10.0.26100.9445 -

II. Public POCs for CVE-2026-85877

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III. Intelligence Information for CVE-2026-85877

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Vendor Advisories for CVE-2026-85877 (1)

Same Patch Batch · Microsoft · 2026-09-08 · 966 CVEs total

CVE-2026-83941 9.9 CRITICAL Entra ID Elevation of Privilege Vulnerability
CVE-2026-69408 9.8 CRITICAL Microsoft Windows Media Foundation Remote Code Execution Vulnerability
CVE-2026-69819 9.8 CRITICAL RPC Runtime Library Remote Code Execution Vulnerability
CVE-2026-73025 9.8 CRITICAL Windows iSCSI Security Feature Bypass Vulnerability
CVE-2026-72982 9.8 CRITICAL Windows Netlogon Remote Code Execution Vulnerability
CVE-2026-69276 9.8 CRITICAL Microsoft UxTheme Library (uxtheme.dll) Remote Code Execution Vulnerability
CVE-2026-73010 9.8 CRITICAL Microsoft Failover Cluster Remote Code Execution Vulnerability
CVE-2026-69595 9.8 CRITICAL Windows Services for NFS ONCRPC XDR Driver Remote Code Execution Vulnerability
CVE-2026-72983 9.8 CRITICAL Internet Connection Sharing (ICS) Remote Code Execution Vulnerability
CVE-2026-73009 9.8 CRITICAL Windows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution Vulnerability
CVE-2026-69525 9.8 CRITICAL Remote Desktop Services Remote Code Execution Vulnerability
CVE-2026-69491 9.8 CRITICAL Microsoft DirectMusic Remote Code Execution Vulnerability
CVE-2026-69910 9.8 CRITICAL Windows Hyper-V Remote Code Execution Vulnerability
CVE-2026-69730 9.8 CRITICAL Windows DNS Server Remote Code Execution Vulnerability
CVE-2026-78509 9.8 CRITICAL Microsoft Office Outlook Remote Code Execution Vulnerability
CVE-2026-69463 9.8 CRITICAL Windows NTFS Remote Code Execution Vulnerability
CVE-2026-78510 9.8 CRITICAL Microsoft Word Remote Code Execution Vulnerability
CVE-2026-69590 9.8 CRITICAL Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
CVE-2026-69496 9.8 CRITICAL Windows Compressed Folder Remote Code Execution Vulnerability
CVE-2026-72979 9.8 CRITICAL Windows DHCP Server Remote Code Execution Vulnerability

Showing top 20 of 966 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Windows 11 Version 24H2
Same vendor: Microsoft
Same weakness: CWE-122

V. Comments for CVE-2026-85877

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