---
id: "CVE-2023-41763"
kind: "vulnerability"
aliases: ["CVE-2023-41763"]
title: "microsoft skype for business server: Skype for Business Elevation of Privilege Vulnerability"
severity: "medium"
cvss: 5.3
epss: null
exploited: true
status: "open"
category: "other"
products: [{"name": "Microsoft Skype for Business", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "microsoft skype for business server", "fixed": [], "affected": "= 2015", "ecosystem": "vendor"}, {"name": "microsoft skype for business server", "fixed": [], "affected": "= 2019", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["exploited", "other", "skype-for-business", "windows"]
not_affected_if: ["not-using-skype-for-business"]
published_at: "2023-10-10T00:00:00+00:00"
first_seen_at: "2026-10-23T19:11:51+00:00"
updated_at: "2026-10-23T22:29:04+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2023-41763", "first_seen_at": "2026-10-23T19:11:51+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-41763", "first_seen_at": "2026-10-23T22:29:04+00:00"}]
---

# microsoft skype for business server: Skype for Business Elevation of Privilege Vulnerability

Microsoft Skype for Business has an unspecified flaw that lets a user escalate their privileges. CISA lists it as actively exploited in the wild.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:Microsoft Skype for Business affected ? fixed ?
- vendor:microsoft skype for business server affected = 2015 fixed ?
- vendor:microsoft skype for business server affected = 2019 fixed ?

## Fix

Apply mitigations per vendor instructions, or discontinue use of the product if mitigations are unavailable (per CISA required action).

## Timeline

- 2026-10-23T19:11:51+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2023-41763
- 2026-10-23T22:29:04+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2023-41763

## From the sources

Microsoft Skype for Business contains an unspecified vulnerability that allows for privilege escalation.

CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_