What’s Vulnerable › Vulnerabilities

CVE-2026-70348: Windows Management Services Denial of Service Vulnerability

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-11 · updated 2026-10-30
• Weakness: CWE-59

Description

Improper link resolution before file access ('link following') in Windows Management Services allows an authorized attacker to deny service locally.

Affected products

• Microsoft Windows 11: before 10.0.26100.9106 — fixed in 10.0.26100.9106
• Microsoft Windows 11 25H2: before 10.0.26200.9106 — fixed in 10.0.26200.9106
• Microsoft Windows 11 version 26H1: before 10.0.28000.2704 — fixed in 10.0.28000.2704
• Microsoft Windows 11: from 10.0.26100.0 before 10.0.26100.9168 — fixed in 10.0.26100.9168
• Microsoft Windows 11 25H2: from 10.0.26200.0 before 10.0.26200.9168 — fixed in 10.0.26200.9168
• Microsoft Windows 11 version 26H1: from 10.0.28000.0 before 10.0.28000.2704 — fixed in 10.0.28000.2704

How to fix

Upgrade to a fixed version: Microsoft Windows 11 10.0.26100.9106; Microsoft Windows 11 25H2 10.0.26200.9106; Microsoft Windows 11 version 26H1 10.0.28000.2704; Microsoft Windows 11 10.0.26100.9168; Microsoft Windows 11 25H2 10.0.26200.9168; Microsoft Windows 11 version 26H1 10.0.28000.2704. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70348

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