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OpenAdvisories

Patch days / October 2026

Microsoft Patch Tuesday — October 2026

Tuesday, 13 October 2026

Vulnerabilities
1,439
Critical
60
High
1,013
Zero-days
1
Public exploit
5

Exploited 1

Confirmed exploited (CISA KEV, ENISA). "Zero-day" means exploitation was known by the patch day — install these first.

Critical 60

35 more in the full list below.

Public exploit code 5

Not critical and not yet seen exploited, but exploit or proof-of-concept code is public.

All vulnerabilities 1,439

Critical60 Show
High1,013 Show
Medium366 Show