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CVE-2026-83746: CWE-36: Absolute Path Traversal in Microsoft Skype for Business Server 2015 CU13

0
High
VulnerabilityCVE-2026-83746cvecve-2026-83746cwe-36
Published: 10/13/2026 (10/13/2026, 19:01:10 UTC)
Source: CVE Database V5
Vendor/Project: Microsoft
Product: Skype for Business Server 2015 CU13

Description

Absolute path traversal in Skype for Business and Microsoft Lync allows an authorized attacker to elevate privileges over a network.

CVSS v3.1

Score 8.1high

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H/E:U/RL:O/RC:C

Affected software

Microsoft

Skype for Business Server 2015 CU13

Affected versions
>=9319.0 <6.0.9319.886

Microsoft

Skype for Business Server 2019 CU8

Affected versions
>=2046.0 <7.0.2046.583

Microsoft

Skype for Business Server Subscription Edition CU1

Affected versions
>=2046.0 <7.0.2046.889

Technical Details

Data Version
5.2
Assigner Short Name
microsoft
Date Reserved
2026-08-31T22:57:35.491Z
Cvss Version
3.1
State
PUBLISHED
Remediation Level
official-fix
Vendor Advisory Urls
[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83746","vendor":"Microsoft"}]

Threat ID: 6ace85092cdf04f6569f28c3

Added to database: 10/13/2026, 19:22:49 UTC

Last updated: 10/13/2026, 21:50:42 UTC

Views: 4

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