Vulnerability Intelligence Report
Skype for Business Elevation of Privilege Vulnerability
CVE-2026-83746
Absolute path traversal in Skype for Business and Microsoft Lync allows an authorized attacker to elevate privileges over a network.
No Active Exploit Signals
CVSS Base Score
8.1
HIGH
Exploitability:2.9
Impact Score:5.2
EPSS Probability:1.01%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-36 ↗CWE-36: Absolute Path Traversal
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Microsoft | Skype for Business Server 2015 CU13 | 9319.0 < 6.0.9319.886 (affected) |
| Microsoft | Skype for Business Server 2019 CU8 | 2046.0 < 7.0.2046.583 (affected) |
| Microsoft | Skype for Business Server Subscription Edition CU1 | 2046.0 < 7.0.2046.889 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
1.013%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Microsoft Corporation · Vendor · USA |
| Reserved | 2026-08-31T22:57:35 |
| Published | 2026-10-13T19:01:10 |
| Patch Date | 2026-10-13 |
| Last Updated | 2026-10-14T16:29:19 |
Community Chatter & Buzz