CVE-2019-1084

Name: CVE-2019-1084
Creator: NVD / NIST
Published: 2019-07-15T19:15:17.873+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 5.33%

Last modified Jun 17, 2026

CVE-2019-1084 is a vulnerability of currently unknown severity. 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. EPSS estimates a 5.33% chance of exploitation in the next 30 days.

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'.

Metrics

EPSS Probability

5.33%

91.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions	Update
Microsoft	Exchange Server	2010	Sp2
Microsoft	Exchange Server	2013	Cumulative Update 23
Microsoft	Exchange Server	2016	Cumulative Update 1
Microsoft	Lync	2013	Sp1
Microsoft	Lync Basic	2013	Sp1
Microsoft	Mail And Calendar	All versions	—
Microsoft	Office	2010	Sp2
Microsoft	Office	2013	Sp1
Microsoft	Office	2016	—
Microsoft	Office	2019	—
Microsoft	Office 365 Proplus	All versions	—
Microsoft	Outlook	All versions	—
Microsoft	Outlook	2013	Sp1
Microsoft	Outlook	2016	—
Microsoft	Skype For Business	2016	—
Microsoft	Skype For Business Basic	2016	—

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1084Patch, Vendor Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1084Patch, Vendor Advisory

Timeline

Published: Jul 15, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-1084?

How severe is CVE-2019-1084?

Severity scoring for CVE-2019-1084 is pending analysis. The EPSS model estimates a 5.33% probability of exploitation in the next 30 days.

How do I fix CVE-2019-1084?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-1084?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST