PT-2026-88289 · Microsoft · Skype For Business Server 2015 Cu13+2

CVE-2026-69646

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Published

2026-09-08

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Updated

2026-09-08

CVSS v3.1

8.3

High

VectorAV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Improper verification of cryptographic signature in Skype for Business allows an unauthorized attacker to perform spoofing over an adjacent network.

Fix

Improper Verification of Cryptographic Signature

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Weakness Enumeration

CWE-347

Related Identifiers

CVE-2026-69646

Affected Products

Skype For Business Server 2015 Cu13
Skype For Business Server 2019 Cu8
Skype For Business Server Subscription Edition Cu1