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TI-2022-14751 Aliases CVE-2022-33633GHSA-m4g8-6pfp-59jr

Skype for Business and Lync Remote Code Execution Vulnerability

Priority LOW 38Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Microsoft. Impact type from Microsoft.

Summary

Skype for Business and Lync Remote Code Execution Vulnerability

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.02334 83rd percentileScored 2026-11-07
Fix Fixed Microsoft: 1 update

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftMicrosoft Lync Server 2013 CU108308.0 to before 8308.11988308.1198Patch availableCNA
MicrosoftSkype for Business Server 2015 CU129319.0 to before 9319.6349319.634Patch availableCNA
MicrosoftSkype for Business Server 2019 CU62046.0 to before 2046.4042046.404Patch availableCNA
  • Microsoft Lync Server 2013 CU10 VendorMicrosoft Affected 8308.0 to before 8308.1198 Fixed in 8308.1198 Patch available CNA
  • Skype for Business Server 2015 CU12 VendorMicrosoft Affected 9319.0 to before 9319.634 Fixed in 9319.634 Patch available CNA
  • Skype for Business Server 2019 CU6 VendorMicrosoft Affected 2046.0 to before 2046.404 Fixed in 2046.404 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:lync_server:2013:cumulative_update_10:*:*:*:*:*:*2013 cumulative_update_10VulnerableMicrosoft
cpe:2.3:a:microsoft:skype_for_business:2015:cumulative_update_12:*:*:*:*:*:*2015 cumulative_update_12VulnerableMicrosoft
cpe:2.3:a:microsoft:skype_for_business:2019:cumulative_update_6:*:*:*:*:*:*2019 cumulative_update_6VulnerableMicrosoft
  • cpe:2.3:a:microsoft:lync_server:2013:cumulative_update_10:*:*:*:*:*:* Versions 2013 cumulative_update_10 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:skype_for_business:2015:cumulative_update_12:*:*:*:*:*:* Versions 2015 cumulative_update_12 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:skype_for_business:2019:cumulative_update_6:*:*:*:*:*:* Versions 2019 cumulative_update_6 Vulnerable ·Microsoft

Remediation

Microsoft 1 update

  • KB5016714
    Security Update
    • Microsoft Lync Server 2013 CU10 8308.1198
    • Skype for Business Server 2015 CU12 9319.634
    • Skype for Business Server 2019 CU6 2046.404

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Remote Code Execution
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-33633
  2. 2026-10-03 Alias added: GHSA-m4g8-6pfp-59jr

References

Advisory 1

  • TI-2013-01140 Microsoft Communicator 2007 R2, Lync 2010, Lync 2010 Attendee, and Lync Server 2013 do… CVSS 2.0HIGH 9.3
  • TI-2014-01426 Cross-site scripting (XSS) vulnerability in the Web Components Server in Microsoft Lync… CVSS 2.0MEDIUM 4.3
  • TI-2014-03321 The Server in Microsoft Lync Server 2013 allows remote attackers to cause a denial of… CVSS 2.0MEDIUM 5.0
  • TI-2014-03319 The Response Group Service in Microsoft Lync Server 2010 and 2013 and the Core Components… CVSS 2.0MEDIUM 5.0
  • TI-2021-08239 Skype for Business and Lync Remote Code Execution Vulnerability CVSS 3.1HIGH 7.2
  • TI-2022-10143 Skype for Business Information Disclosure Vulnerability CVSS 3.1MEDIUM 6.5
See all 15 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences