CVE-2019-1084

high-risk
Published 2019-07-15

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'.

Do I need to act?

~
9.0% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.5/10 Medium
NETWORK / LOW complexity

Affected Products (20)

Mail And Calendar

Affected Vendors

Microsoft

References (2)

Patch https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1084
Patch https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1084
54
/ 100
high-risk
Severity 24/34 · High
Exploitability 10/34 · Low
Exposure 20/34 · Moderate