CVE-2019-1084
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'.
Key facts
- CVSS score
- 6.5 (v3.0)
- Severity
- MEDIUM
- CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N- Weakness (CWE)
- CWE-200
- EPSS score
- 5.3% (93th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2019-9665)
- Published
- July 15, 2019
- NVD last modified
- June 17, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2019-9665 in the EU Vulnerability Database. Last updated in EUVD on August 4, 2024.
View on the EU Vulnerability DatabaseAffected products
- microsoft / exchange server
- microsoft / exchange server
- microsoft / exchange server
- microsoft / exchange server
- microsoft / exchange server
- microsoft / exchange server
- microsoft / lync
- microsoft / lync basic
- microsoft / mail and calendar
- microsoft / office
- microsoft / office
- microsoft / office
- microsoft / office
- microsoft / office
- microsoft / office
- microsoft / office 365 proplus
- microsoft / outlook
- microsoft / outlook
- microsoft / outlook
- microsoft / outlook
- microsoft / skype for business
- microsoft / skype for business basic
Certified products that may be affected
1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.
- Microsoft Exchange Server 2010 SP1 Enterprise (English) 64-bit - Microsoft Corporation - Common Criteria Certificate Number: 2011/72 - archived
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1084(Patch, Vendor Advisory)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
Query CVEs from your AI assistant
The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.
Add the CVE brain