CVE-2021-26422
Skype for Business and Lync Remote Code Execution Vulnerability
HIGH
7.2
CVSS Score
Published: May 11, 2021 at 07:11 PM UTC
Updated: June 17, 2026 at 03:43 AM UTC
2 products affected across 1 vendorSkype for Business ServerLync Server
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Severity
HIGH7.2
Exploit prediction
EPSS 2%
Description
Skype for Business and Lync Remote Code Execution Vulnerability
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Affected range stops below 8308.1144, so it looks safe — our inference, not a vendor statement
1.0 ≤ v < 2046.3692015 CU11 ≤ v < 9319.6061.020152015 CU112015 cumulative_update_1120192019 cumulative_update_5
Affected range stops below 2046.369, so it looks safe — our inference, not a vendor statement
Affected range stops below 9319.606, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26422CVSS
7.2HIGHmicrosoft
Vector?
Quick Info
StatusMODIFIED
CWE
NVD-CWE-noinfo
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