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Medium severity6.5NVD Advisory· Published May 11, 2021· Updated Jun 17, 2026

CVE-2021-26421

CVE-2021-26421

Description

Skype for Business and Lync Spoofing Vulnerability

Affected products

4

Microsoft/Lync Server
cpe:2.3:a:microsoft:lync_server:2013:cumulative_update_10:*:*:*:*:*:*
Microsoft/Skype For Business2 versions
cpe:2.3:a:microsoft:skype_for_business_server:2015:cumulative_update_11:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:microsoft:skype_for_business_server:2015:cumulative_update_11:*:*:*:*:*:*
- (no CPE)
Microsoft/Lyncllm-fuzzy

Patches

Vulnerability mechanics

References

1

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26421nvdPatchVendor Advisory

News mentions

0

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