CVE-2021-26422 — HIGH (7.2)

Vulnerability Description

Skype for Business and Lync Remote Code Execution Vulnerability

CVSS Score

7.2

HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Microsoft	Lync Server	2013
Microsoft	Skype For Business Server	2015

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-2642PatchVendor Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-2642PatchVendor Advisory

FAQ

What is CVE-2021-26422?

CVE-2021-26422 is a vulnerability with a CVSS score of 7.2 (HIGH). Skype for Business and Lync Remote Code Execution Vulnerability

How severe is CVE-2021-26422?

CVE-2021-26422 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-26422?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Lync Server, Microsoft Skype For Business Server.