Microsoft Skype for Business Privilege Escalation Vulnerability

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Oct 10, 2023 · Catalog

   Detected

   Microsoft Skype for Business contains an unspecified vulnerability that allows for privilege escalation.

2. Oct 10, 2023 · CISA KEV

   Known exploited

   Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

3. Oct 31, 2023 · CISA KEV

   Remediation due

   Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

4. Jun 16, 2026 · Catalog

   Updated

   Microsoft Skype for Business contains an unspecified vulnerability that allows for privilege escalation.

Affected

• cpe microsoft/skype for business server2015
• cpe microsoft/skype for business server2019
• vendor Microsoft Skype for Businessversion unspecified

Sources

• CISA KEVConfirmed exploitationCVE-2023-41763

  Microsoft Skype for Business contains an unspecified vulnerability that allows for privilege escalation.

  cisa.gov
• CVE.orgVulnerability recordCVE-2023-41763

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2023-41763

  30-day exploitation probability 90.5%

  first.org
• NIST NVDVulnerability recordCVE-2023-41763

  Skype for Business Elevation of Privilege Vulnerability

  nvd.nist.gov

References

• CISA note · msrc.microsoft.com
• Patch · msrc.microsoft.com
• CISA note · nvd.nist.gov
• US Government Resource · cisa.gov