Information disclosure in Microsoft Exchange Server
Priority LOW 37CWE-200Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-200.
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'.
Why it matters now
EPSS 0.05328 92nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Microsoft | Microsoft Exchange Server | 2010 Service Pack 3 | — | No fix listed | CNA |
| Microsoft | Microsoft Outlook | 2010 Service Pack 2 (32-bit editions); 2010 Service Pack 2 (64-bit editions); 2016 (32-bit edition); 2016 (64-bit edition); 2013 Service Pack 1 (32-bit editions); 2013 Service Pack 1 (64-bit editions) | — | No fix listed | CNA |
| Microsoft | Microsoft Office | 2013 Service Pack 1 (32-bit editions); 2013 Service Pack 1 (64-bit editions); 2013 RT Service Pack 1; 2016 for Mac; 2016 (32-bit edition); 2016 (64-bit edition); 2019 for 32-bit editions; 2019 for 64-bit editions; 2019 for Mac | — | No fix listed | CNA |
| Microsoft | Microsoft Lync | 2013 Service Pack 1 (32-bit); 2013 Service Pack 1 (64-bit) | — | No fix listed | CNA |
| Microsoft | Microsoft Lync Basic | 2013 Service Pack 1 (32-bit); 2013 Service Pack 1 (64-bit) | — | No fix listed | CNA |
| Microsoft | Microsoft Outlook for Android | all versions | — | No fix listed | CNA |
| Microsoft | Skype for Business | 2016 (32-bit); 2016 (64-bit) | — | No fix listed | CNA |
| Microsoft | Skype for Business Basic | 2016 (32-bit); 2016 (64-bit) | — | No fix listed | CNA |
| Microsoft | Office 365 ProPlus | 32-bit Systems; 64-bit Systems | — | No fix listed | CNA |
| Microsoft | Microsoft Exchange Server 2016 | Cumulative Update 12; Cumulative Update 13 | — | No fix listed | CNA |
| Microsoft | Microsoft Exchange Server 2019 | Cumulative Update 1; Cumulative Update 2 | — | No fix listed | CNA |
| Microsoft | Microsoft Exchange Server 2013 | Cumulative Update 23 | — | No fix listed | CNA |
| Microsoft | Mail and Calendar | all versions | — | No fix listed | CNA |
| Microsoft | Outlook for iOS | all versions | — | No fix listed | CNA |
- Microsoft Exchange Server VendorMicrosoft Affected 2010 Service Pack 3 Fixed in — No fix listed CNA
- Microsoft Outlook VendorMicrosoft Affected 2010 Service Pack 2 (32-bit editions); 2010 Service Pack 2 (64-bit editions); 2016 (32-bit edition); 2016 (64-bit edition); 2013 Service Pack 1 (32-bit editions); 2013 Service Pack 1 (64-bit editions) Fixed in — No fix listed CNA
- Microsoft Office VendorMicrosoft Affected 2013 Service Pack 1 (32-bit editions); 2013 Service Pack 1 (64-bit editions); 2013 RT Service Pack 1; 2016 for Mac; 2016 (32-bit edition); 2016 (64-bit edition); 2019 for 32-bit editions; 2019 for 64-bit editions; 2019 for Mac Fixed in — No fix listed CNA
- Microsoft Lync VendorMicrosoft Affected 2013 Service Pack 1 (32-bit); 2013 Service Pack 1 (64-bit) Fixed in — No fix listed CNA
- Microsoft Lync Basic VendorMicrosoft Affected 2013 Service Pack 1 (32-bit); 2013 Service Pack 1 (64-bit) Fixed in — No fix listed CNA
- Microsoft Outlook for Android VendorMicrosoft Affected all versions Fixed in — No fix listed CNA
- Skype for Business VendorMicrosoft Affected 2016 (32-bit); 2016 (64-bit) Fixed in — No fix listed CNA
- Skype for Business Basic VendorMicrosoft Affected 2016 (32-bit); 2016 (64-bit) Fixed in — No fix listed CNA
- Office 365 ProPlus VendorMicrosoft Affected 32-bit Systems; 64-bit Systems Fixed in — No fix listed CNA
- Microsoft Exchange Server 2016 VendorMicrosoft Affected Cumulative Update 12; Cumulative Update 13 Fixed in — No fix listed CNA
- Microsoft Exchange Server 2019 VendorMicrosoft Affected Cumulative Update 1; Cumulative Update 2 Fixed in — No fix listed CNA
- Microsoft Exchange Server 2013 VendorMicrosoft Affected Cumulative Update 23 Fixed in — No fix listed CNA
- Mail and Calendar VendorMicrosoft Affected all versions Fixed in — No fix listed CNA
- Outlook for iOS VendorMicrosoft Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 22
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:microsoft:exchange_server:2010:sp2:*:*:*:*:*:* | 2010 sp2 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_23:*:*:*:*:*:* | 2013 cumulative_update_23 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_1:*:*:*:*:*:* | 2016 cumulative_update_1 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_12:*:*:*:*:*:* | 2016 cumulative_update_12 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_13:*:*:*:*:*:* | 2016 cumulative_update_13 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_2:*:*:*:*:*:* | 2016 cumulative_update_2 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:lync:2013:sp1:*:*:*:*:*:* | 2013 sp1 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:lync_basic:2013:sp1:*:*:*:*:*:* | 2013 sp1 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:mail_and_calendar:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:office:2010:sp2:*:*:*:*:*:* | 2010 sp2 | Vulnerable | Microsoft |
- cpe:2.3:a:microsoft:exchange_server:2010:sp2:*:*:*:*:*:* Versions 2010 sp2 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_23:*:*:*:*:*:* Versions 2013 cumulative_update_23 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_1:*:*:*:*:*:* Versions 2016 cumulative_update_1 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_12:*:*:*:*:*:* Versions 2016 cumulative_update_12 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_13:*:*:*:*:*:* Versions 2016 cumulative_update_13 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_2:*:*:*:*:*:* Versions 2016 cumulative_update_2 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:lync:2013:sp1:*:*:*:*:*:* Versions 2013 sp1 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:lync_basic:2013:sp1:*:*:*:*:*:* Versions 2013 sp1 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:mail_and_calendar:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:office:2010:sp2:*:*:*:*:*:* Versions 2010 sp2 Vulnerable ·Microsoft
Show 12 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:microsoft:office:2013:sp1:*:*:*:*:*:* | 2013 sp1 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:office:2016:*:*:*:*:*:*:* | 2016 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:office:2016:*:*:*:*:mac_os:*:* | 2016 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:*:* | 2019 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:office:2019:*:*:*:*:macos:*:* | 2019 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:office_365_proplus:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:outlook:-:*:*:*:*:iphone_os:*:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:outlook:2013:sp1:*:*:*:*:*:* | 2013 sp1 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:outlook:2016:*:*:*:*:*:*:* | 2016 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:outlook:2016:*:*:*:*:android:*:* | 2016 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:skype_for_business:2016:*:*:*:*:*:*:* | 2016 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:skype_for_business_basic:2016:*:*:*:*:*:*:* | 2016 | Vulnerable | Microsoft |
- cpe:2.3:a:microsoft:office:2013:sp1:*:*:*:*:*:* Versions 2013 sp1 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:office:2016:*:*:*:*:*:*:* Versions 2016 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:office:2016:*:*:*:*:mac_os:*:* Versions 2016 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:*:* Versions 2019 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:office:2019:*:*:*:*:macos:*:* Versions 2019 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:office_365_proplus:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:outlook:-:*:*:*:*:iphone_os:*:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:outlook:2013:sp1:*:*:*:*:*:* Versions 2013 sp1 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:outlook:2016:*:*:*:*:*:*:* Versions 2016 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:outlook:2016:*:*:*:*:android:*:* Versions 2016 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:skype_for_business:2016:*:*:*:*:*:*:* Versions 2016 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:skype_for_business_basic:2016:*:*:*:*:*:*:* Versions 2016 Vulnerable ·Microsoft
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-1084
- 2026-10-03 Alias added: GHSA-r2c7-qvrq-pwg6
More Microsoft Exchange Server vulnerabilities
- TI-2024-14170 Microsoft Exchange Server Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2022-19610 Microsoft Exchange Server Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2021-13547 Microsoft Exchange Server Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2021-13502 Microsoft Exchange Server Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2021-08465 Microsoft Exchange Server Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2023-07929 Microsoft Exchange Server Remote Code Execution Vulnerability KEVCVSS 3.1HIGH 8.8
Sources
- CVE-2019-1084 · CVE Program
- CVE-2019-1084 · NVD
- FIRST EPSS
- GHSA-r2c7-qvrq-pwg6 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences