Patch tracker / Products / Skype for Business Server 2019 CU8

Skype for Business Server 2019 CU8: vulnerabilities and security updates

Every CVE affecting Skype for Business Server 2019 CU8 and the Microsoft update (KB) that fixes it, ranked by real-world risk. Actively exploited (CISA KEV) first, then EPSS exploit probability, on top of CVSS severity.

CVEs
13
Updates (KBs)
3
Actively exploited (KEV)
0
Critical Severity
1

CVEs affecting Skype for Business Server 2019 CU8

CVESeverityCVSSEPSSStatus
CVE-2026-66302Critical9.81.0%-
CVE-2026-70297High8.81.2%-
CVE-2026-83746High8.11.1%-
CVE-2026-69646High8.30.3%-
CVE-2026-66307High7.51.2%-
CVE-2026-66304High7.51.0%-
CVE-2026-66305High7.10.5%-
CVE-2026-66303Medium6.51.1%-
CVE-2026-66308Medium6.51.1%-
CVE-2026-85873Medium6.51.0%-
CVE-2026-66306Medium6.50.9%-
CVE-2026-63523Medium6.50.6%-
CVE-2026-69642Medium6.50.4%-

Updates (KBs) for Skype for Business Server 2019 CU8

UpdateReleasedSeverityCVSSEPSSCVEsStatus
KB51232872026-09-08Critical9.81.2%10-
KB51233002026-09-08Critical9.81.2%10-
KB51316932026-10-13High8.81.2%3-

Ranked across all products on the Microsoft patch tracker and the CVE and vulnerability management reference. Browse every product: product index.

Most searched on Senserva right now

KB5126651: the full CVE list KB5126655 install notes and severity KB5126657: the full CVE list KB5126646 install notes and severity KB5122876 install notes and severity KB5126868 install notes and severity KB5126052 install notes and severity KB5127648: patch details KB5122882: the full CVE list CVE-2026-111497: severity and the patch
New to a term on this page? CVE, KB, KEV, CVSS, and EPSS are each explained once, on the Senserva security lexicon. Reference: Microsoft CVE and vulnerability management and the Microsoft patching guide.
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