Microsoft · Security update · November 9, 2021

KB5007189: November 2021 cumulative update for Windows 10 1909

KB5007189, released November 9, 2021, fixes 23 CVEs across 6 products. One of them is being exploited (CVE-2021-41379); 1 on CISA KEV. Patch Radar priority: Patch now. The product is no longer supported.

Patch now1 on CISA KEVKnown ransomware use2 publicly disclosedUnsupported product
CVEs closed
23
3 rated Critical
Exploited
1
CVE-2021-41379
Exploitation more likely
2
Vendor assessment
Highest EPSS
0.1945
97th percentile

Priority of the 23 CVEs

Patch now 1 Urgent 4 High 11 Routine 7

Applies to

ProductBuild after install
Microsoft Edge (Chromium-based) in IE Mode on Windows 10 Version 1909 for 32-bit Systems18363.1916
Microsoft Edge (Chromium-based) in IE Mode on Windows 10 Version 1909 for ARM64-based Systems18363.1916
Microsoft Edge (Chromium-based) in IE Mode on Windows 10 Version 1909 for x64-based Systems18363.1916
Windows 10 Version 1909 for 32-bit Systems18363.1916
Windows 10 Version 1909 for ARM64-based Systems18363.1916
Windows 10 Version 1909 for x64-based Systems18363.1916

CVEs this fix closes

PriorityCVEComponentImpactCVSSEPSSExploitation
Patch now CVE-2021-41379 Windows Installer Elevation of Privilege 5.5 0.1945 KEVRansomwareExploited
Urgent CVE-2021-38666 Windows RDP Remote Code Execution 8.8 0.1518 More likely
Urgent CVE-2021-41356 Microsoft Windows Denial of Service 7.5 0.0302 More likely
Urgent CVE-2021-42279 Windows Scripting Remote Code Execution 4.2 0.0232 Exploitation Less Likely
Urgent CVE-2021-26443 Windows Virtual Machine Bus Remote Code Execution 9.0 0.0170 Exploitation Less Likely
High CVE-2021-38665 Windows RDP Information Disclosure 7.4 0.0702 Exploitation Less Likely
High CVE-2021-42276 Microsoft Windows Codecs Library Remote Code Execution 7.8 0.0249 Exploitation Less Likely
High CVE-2021-42275 Windows COM Remote Code Execution 8.8 0.0210 Exploitation Less Likely
High CVE-2021-41378 Windows NTFS Remote Code Execution 7.8 0.0157 Exploitation Less Likely
High CVE-2021-42285 Windows Kernel Elevation of Privilege 7.8 0.0055 Exploitation Less Likely
High CVE-2021-42283 Windows NTFS Elevation of Privilege 8.8 0.0049 Exploitation Less Likely
High CVE-2021-36957 Windows Desktop Bridge Elevation of Privilege 7.8 0.0049 Exploitation Less Likely
High CVE-2021-41366 Windows Cred SSProvider Protocol Elevation of Privilege 7.8 0.0049 Exploitation Less Likely
High CVE-2021-41367 Windows NTFS Elevation of Privilege 7.8 0.0049 Exploitation Less Likely
High CVE-2021-41370 Windows NTFS Elevation of Privilege 7.8 0.0049 Exploitation Less Likely
High CVE-2021-41377 Windows Fast FAT Driver Elevation of Privilege 7.8 0.0049 Exploitation Less Likely
Routine CVE-2021-41351 Microsoft Edge (Chromium-based) in IE Mode Spoofing 4.3 0.0391 Exploitation Less Likely
Routine CVE-2021-42284 Role: Windows Hyper-V Denial of Service 6.8 0.0376 Exploitation Less Likely
Routine CVE-2021-38631 Windows RDP Information Disclosure 4.4 0.0188 DisclosedExploitation Less Likely
Routine CVE-2021-41371 Windows RDP Information Disclosure 4.4 0.0165 DisclosedExploitation Less Likely
Routine CVE-2021-42280 Windows Feedback Hub Elevation of Privilege 5.5 0.0096 Exploitation Less Likely
Routine CVE-2021-42277 Windows Diagnostic Hub Elevation of Privilege 5.5 0.0087 Exploitation Less Likely
Routine CVE-2021-42288 Windows Hello Security Feature Bypass 5.7 0.0071 Exploitation Less Likely
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