Released: October 2026 Skype for Business Server Security Updates

Microsoft has released Security Updates (SUs) for vulnerabilities found in: Skype for Business Server Subscription Edition (SE) Skype for Business Server 2019 Skype for Business Server 2015 SUs are available for the following specific versions of Skype for Business Server: Skype for Business Subscription Edition (SE) CU1 Security Update 2 Skype for Business Server 2019 CU8 Security Update 4 (to access, organization must purchase Extended Security Update (ESU)) Skype for Business Server 2015 CU13 Security Update 4 (to access, organization must purchase Extended Security Update (ESU)) The Octobe