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Microsoft Skype for Business Server 2015 CU13 vulnerabilities

17 known vulnerabilities, 1 confirmed exploited in the wild (CISA KEV), 13 published in the last 12 months.

Check whether your Microsoft Skype for Business Server 2015 CU13 version is affected

Exploited Microsoft Skype for Business Server 2015 CU13 vulnerabilities

• CVE-2023-41763 — Skype for Business Elevation of Privilege Vulnerability

Latest Microsoft Skype for Business Server 2015 CU13 vulnerabilities

• CVE-2026-85873 — Skype for Business Elevation of Privilege Vulnerability (CVSS 6.5)
• CVE-2026-83746 — Skype for Business Elevation of Privilege Vulnerability (CVSS 8.1)
• CVE-2026-70297 — Skype for Business Remote Code Execution Vulnerability (CVSS 8.8)
• CVE-2026-66302 — Skype for Business Remote Code Execution Vulnerability (CVSS 9.8)
• CVE-2026-66307 — Skype for Business and Lync Denial of Service Vulnerability (CVSS 7.5)
• CVE-2026-66303 — Skype for Business and Lync Denial of Service Vulnerability (CVSS 6.5)
• CVE-2026-69646 — Skype for Business Spoofing Vulnerability (CVSS 8.3)
• CVE-2026-69642 — Skype for Business Spoofing Vulnerability (CVSS 6.1)
• CVE-2026-66305 — Skype for Business Spoofing Vulnerability (CVSS 7.1)
• CVE-2026-63523 — Skype for Business Spoofing Vulnerability (CVSS 6.1)
• CVE-2026-66308 — Skype for Business and Lync Denial of Service Vulnerability (CVSS 6.5)
• CVE-2026-66306 — Skype for Business Information Disclosure Vulnerability (CVSS 6.5)
• CVE-2026-66304 — Skype for Business Information Disclosure Vulnerability (CVSS 7.5)
• CVE-2023-36780 — Skype for Business Remote Code Execution Vulnerability (CVSS 7.2)
• CVE-2023-36786 — Skype for Business Remote Code Execution Vulnerability (CVSS 7.2)
• CVE-2023-36789 — Skype for Business Remote Code Execution Vulnerability (CVSS 7.2)
• CVE-2023-41763 — Skype for Business Elevation of Privilege Vulnerability (CVSS 5.3) — exploited