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CVE-2026-85873

Skype for Business Elevation of Privilege Vulnerability

MEDIUM
6.5
CVSS Score
Published: October 13, 2026 at 07:01 PM UTC
Updated: October 29, 2026 at 03:18 PM UTC
3 products affected across 1 vendorSkype for Business ServerSkype for Business Server Subscription EditionSkype for Business Server Subscription Edition Rtm

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Severity
MEDIUM6.5
Exploit prediction
EPSS 1.0%
SSVC
No known exploit

Description

Improper authorization in Skype for Business and Microsoft Lync allows an authorized attacker to elevate privileges over a network.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor AdvisoryPatch
Source: cverecord
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85873

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMmicrosoft
Vector?

Quick Info

StatusUNDERGOING ANALYSIS
CWE
CWE-639

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