CVE-2026-69646
High
Description
Improper verification of cryptographic signature in Skype for Business allows an unauthorized attacker to perform spoofing over an adjacent network.
SeverityHigh
CVSS8.3
Exploit probability—
Product
Microsoft Skype For Business Server
PublishedSep 8, 2026
First seenSep 8, 2026
Weakness typeCWE-347CWE-347
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft skype_for_business_server | 2015, 2019 | — |
| microsoft skype_for_business_server_subscription_edition | 7.0.2046.849 | — |
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