What is CVE-2026-85877?

CVE-2026-85877 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Windows Print Spooler Remote Code Execution Vulnerability

Which CVE IDs does CVE-2026-85877 cover?

CVE-2026-85877 covers the following CVE IDs: CVE-2026-85877. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-85877?

CVE-2026-85877 has a CVSS v3 base score of 8.8, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-85877?

CVE-2026-85877 affects 1 product, including: Windows 11 Version 24H2 for x64-based Systems.

CVE-2026-85877HighCVSS 8.8

Windows Print Spooler Remote Code Execution Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

September 11, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-85877 →

📋 Description

Heap-based buffer overflow in Windows Print Spooler Components allows an unauthorized attacker to execute code over a network.

🎯 Affected products1

Windows 11 Version 24H2 for x64-based Systems

✅ Remediation

KB5124008 (Security Update) — fixed build 10.0.26100.9445

🔗 References (3)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85877
patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5124008
referencehttps://support.microsoft.com/help/5124008