CVE-2021-26422: Skype for Business and Lync Remote Code Execution Vulnerability
First published: Tue May 11 2021(Updated: )
Skype for Business and Lync Remote Code Execution Vulnerability
Credit: secure@microsoft.com secure@microsoft.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Microsoft Lync Server | =2013-cumulative_update_10 | |
| Microsoft Skype For Business Server | =2015-cumulative_update_11 | |
| Microsoft Skype For Business Server | =2019-cumulative_update_5 |
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Frequently Asked Questions
What is CVE-2021-26422?
CVE-2021-26422 is a remote code execution vulnerability in Skype for Business and Lync Server.
How severe is CVE-2021-26422?
CVE-2021-26422 has a severity score of 7.2, which is considered high.
Which software versions are affected by CVE-2021-26422?
Microsoft Lync Server 2013 (Cumulative Update 10), Microsoft Skype for Business Server 2015 (Cumulative Update 11), and Microsoft Skype for Business Server 2019 (Cumulative Update 5) are affected by CVE-2021-26422.
How can I fix CVE-2021-26422?
Apply the relevant security updates provided by Microsoft to fix CVE-2021-26422.
Where can I find more information about CVE-2021-26422?
You can find more information about CVE-2021-26422 on the Microsoft Security Guidance Advisory page: https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26422
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- vendor/microsoft
- canonical/microsoft lync server
- version/microsoft lync server/2013-cumulative_update_10
- canonical/microsoft skype for business server
- version/microsoft skype for business server/2015-cumulative_update_11
- version/microsoft skype for business server/2019-cumulative_update_5