What’s Vulnerable › Vulnerabilities

CVE-2023-36780: Skype for Business Remote Code Execution Vulnerability

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-10-10 · updated 2026-06-17
• Weakness: CWE-426

Description

Skype for Business Remote Code Execution Vulnerability

Affected products

• Microsoft Skype for Business Server 2019 CU7: 2015-cumulative_update_13, 2019-cumulative_update_7
• Microsoft Skype for Business Server 2019 CU7: from 2046.0 before 7.0.246.530 — fixed in 7.0.246.530
• Microsoft Skype for Business Server 2015 CU13: from 9319.0 before 6.0.9319.869 — fixed in 6.0.9319.869

How to fix

Upgrade to a fixed version: Microsoft Skype for Business Server 2019 CU7 7.0.246.530; Microsoft Skype for Business Server 2015 CU13 6.0.9319.869. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36780
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36780

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