---
id: CVE-2023-35636
title: Microsoft Outlook Information Disclosure Vulnerability
summary: Microsoft Outlook Information Disclosure Vulnerability
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N'
cwe:
  - CWE-200
vendor: microsoft
product: 365_apps
affected:
  - 365_apps
  - office = 2016
  - office = 2019
  - office_long_term_servicing_channel = 2021
published: '2023-12-12'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T22:17:24.453'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2023-35636'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35636'
    label: secure@microsoft.com
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35636'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - exploit-available
epss: 0.17697
epssPercentile: 0.9709
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/duy-31/CVE-2023-35636'
  checkedAt: '2026-10-08T23:17:21.760Z'
exploitAvailable: true
ingestedAt: '2026-10-08T23:16:47.354Z'
---

## Overview

Microsoft Outlook Information Disclosure Vulnerability

## Affected

- `365_apps`
- `office = 2016`
- `office = 2019`
- `office_long_term_servicing_channel = 2021`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.