CVE-2019-1084 json
An information disclosure vulnerability exists when Exchange allows creation of entities with Display Names having non-printable characters.
published 2019-07-15 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-9665
- cvss
- 6.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 5.3%
- EPSS 5.3% chance of exploitation in 30 days, percentile 92%
- public exploits
- 0
- none known
Summary
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'.
Patch / fix
Exploit prediction
5.33% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 6.5 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:P/I:N/A:N |
Affected products
- Microsoft Microsoft Exchange Server
- Microsoft Microsoft Outlook
- Microsoft Microsoft Office
- Microsoft Microsoft Lync
- Microsoft Microsoft Lync Basic
- Microsoft Microsoft Outlook for Android
- Microsoft Skype for Business
- Microsoft Skype for Business Basic
- Microsoft Office 365 ProPlus
- Microsoft Microsoft Exchange Server 2016
- Microsoft Microsoft Exchange Server 2019
- Microsoft Microsoft Exchange Server 2013
- Microsoft Mail and Calendar
- Microsoft Outlook for iOS
Classification
- Weakness
-
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
- Technology feeds
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2019-1084
patch, vendor-advisory
Sources
- CVE List CVE-2019-1084
- NVD CVE-2019-1084
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