An information disclosure vulnerability exists when Exchange allows creation of entities with Display Names having non-printable…

Description

An information disclosure vulnerability exists when Exchange allows creation of entities with Display Names having non-printable characters. An authenticated attacker could exploit this vulnerability by creating entities with invalid display names, which, when added to conversations, remain invisible. This security update addresses the issue by validating display names upon creation in Microsoft Exchange, and by rendering invalid display names correctly in Microsoft Outlook clients., aka 'Microsoft Exchange Information Disclosure Vulnerability'.

Scores

EPSS (exploitation in 30 days)

5.3% · top 7.4% of all CVEs (6 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.

Weakness

• Information Disclosure
• CWE-200 (opens in a new tab)All about CWE-200 and its CVEs

Affected products

• Microsoft · Microsoft Exchange Server

  • affected 2010 Service Pack 3

• Microsoft · Microsoft Outlook

  • affected 2010 Service Pack 2 (32-bit editions)
  • affected 2010 Service Pack 2 (64-bit editions)
  • affected 2016 (32-bit edition)
  • affected 2016 (64-bit edition)
  • affected 2013 Service Pack 1 (32-bit editions)
  • affected 2013 Service Pack 1 (64-bit editions)

• Microsoft · Microsoft Office

  • affected 2013 Service Pack 1 (32-bit editions)
  • affected 2013 Service Pack 1 (64-bit editions)
  • affected 2013 RT Service Pack 1
  • affected 2016 for Mac
  • affected 2016 (32-bit edition)
  • affected 2016 (64-bit edition)
  • affected 2019 for 32-bit editions
  • affected 2019 for 64-bit editions
  • affected 2019 for Mac

• Microsoft · Microsoft Lync

  • affected 2013 Service Pack 1 (32-bit)
  • affected 2013 Service Pack 1 (64-bit)

• Microsoft · Microsoft Lync Basic

  • affected 2013 Service Pack 1 (32-bit)
  • affected 2013 Service Pack 1 (64-bit)

• Microsoft · Microsoft Outlook for Android

  • affected unspecified

• Microsoft · Skype for Business

  • affected 2016 (32-bit)
  • affected 2016 (64-bit)

• Microsoft · Skype for Business Basic

  • affected 2016 (32-bit)
  • affected 2016 (64-bit)

• Microsoft · Office 365 ProPlus

  • affected 32-bit Systems
  • affected 64-bit Systems

• Microsoft · Microsoft Exchange Server 2016

  • affected Cumulative Update 12
  • affected Cumulative Update 13

• Microsoft · Microsoft Exchange Server 2019

  • affected Cumulative Update 1
  • affected Cumulative Update 2

• Microsoft · Microsoft Exchange Server 2013

  • affected Cumulative Update 23

• Microsoft · Mail and Calendar

  • affected unspecified

• Microsoft · Outlook for iOS

  • affected unspecified

References (1)

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1084 (opens in a new tab)x_refsource_MISCx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2019-1084](https://trackcve.app/badge/CVE-2019-1084.svg)](https://trackcve.app/cve/CVE-2019-1084)

Record last updated 4 Aug 2024, 18:06 UTC.