Microsoft · Out-of-band update · July 6, 2021

KB5004950: July 2021 cumulative update for Windows 10 1507

KB5004950, released July 6, 2021, fixes 1 CVE across 2 products. One of them is being exploited (CVE-2021-34527); 1 on CISA KEV. Patch Radar priority: Patch now. The product is no longer supported.

Patch now1 on CISA KEVKnown ransomware use1 publicly disclosedUnsupported product
CVEs closed
1
1 rated Critical
Exploited
1
CVE-2021-34527
Exploitation more likely
0
Vendor assessment
Highest EPSS
0.9979
99th percentile

Applies to

ProductBuild after install
Windows 10 for 32-bit Systems10240.18969
Windows 10 for x64-based Systems10240.18969

CVEs this fix closes

PriorityCVEComponentImpactCVSSEPSSExploitation
Patch now CVE-2021-34527 Windows Print Spooler Components Remote Code Execution 8.8 0.9979 KEVRansomwareDisclosedExploited
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