CVE-2026-83746— Skype for Business Elevation of Privilege Vulnerability
Quick assessment
Affected
Microsoft Skype for Business Server 2015 CU13
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Skype for Business 和 Microsoft Lync 中存在绝对路径遍历漏洞，允许经过身份验证的攻击者在网络上提升权限。
Possible ATT&CK Techniques 2 AI
T1068 · Exploitation for Privilege Escalation T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 3
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| 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 |
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I. Basic Information for CVE-2026-83746
Vulnerability Information
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Vulnerability Title
Skype for Business Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Absolute path traversal in Skype for Business and Microsoft Lync allows an authorized attacker to elevate privileges over a network.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
绝对路径遍历
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Microsoft | Skype for Business Server 2015 CU13 | 9319.0 ~ 6.0.9319.886 | - |
|
| Microsoft | Skype for Business Server 2019 CU8 | 2046.0 ~ 7.0.2046.583 | - |
|
| Microsoft | Skype for Business Server Subscription Edition CU1 | 2046.0 ~ 7.0.2046.889 | - |
|
II. Public POCs for CVE-2026-83746
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-83746 (1)
Same Patch Batch · Microsoft · 2026-10-13 · 1407 CVEs total
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| CVE-2026-96924 | 9.8 CRITICAL | Windows OLE Remote Code Execution Vulnerability |
| CVE-2026-97816 | 9.8 CRITICAL | Microsoft OpenSSH for Windows Remote Code Execution Vulnerability |
| CVE-2026-83770 | 9.8 CRITICAL | Windows Text Shaping Remote Code Execution Vulnerability |
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| CVE-2026-96113 | 9.8 CRITICAL | Windows Domain Name Service Remote Code Execution Vulnerability |
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| CVE-2026-83748 | 9.8 CRITICAL | Windows Error Reporting Remote Code Execution Vulnerability |
| CVE-2026-96909 | 9.8 CRITICAL | Windows BitLocker Remote Code Execution Vulnerability |
| CVE-2026-69634 | 9.8 CRITICAL | Windows iSCSI Remote Code Execution Vulnerability |
| CVE-2026-85814 | 9.8 CRITICAL | Microsoft Windows Media Foundation Remote Code Execution Vulnerability |
| CVE-2026-83782 | 9.8 CRITICAL | Windows Shell Remote Code Execution Vulnerability |
Showing top 20 of 1407 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Skype for Business Server 2015 CU13
-
CVE-2026-85873
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Same weakness: CWE-36
-
CVE-2026-70297
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CVE-2026-83683
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V. Comments for CVE-2026-83746
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