Microsoft Defender Elevation of Privilege Vulnerability
Priority LOW 33Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
An elevation of privilege vulnerability exists when the MpSigStub.exe for Defender allows file deletion in arbitrary locations. To exploit the vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted command that could exploit the vulnerability and delete protected files on an affected system once MpSigStub.exe ran again. The update addresses the vulnerability and blocks the arbitrary deletion.
Why it matters now
EPSS 0.00951 61st 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 Forefront Endpoint Protection 2010 | N/A | — | No fix listed | CNA |
| Microsoft | Microsoft System Center Endpoint Protection | N/A | — | No fix listed | CNA |
| Microsoft | Microsoft System Center 2012 R2 Endpoint Protection | N/A | — | No fix listed | CNA |
| Microsoft | Microsoft Security Essentials | N/A | — | No fix listed | CNA |
| Microsoft | Microsoft System Center 2012 Endpoint Protection | N/A | — | No fix listed | CNA |
| Microsoft | Windows Defender | N/A | — | No fix listed | CNA |
- Microsoft Forefront Endpoint Protection 2010 VendorMicrosoft Affected N/A Fixed in — No fix listed CNA
- Microsoft System Center Endpoint Protection VendorMicrosoft Affected N/A Fixed in — No fix listed CNA
- Microsoft System Center 2012 R2 Endpoint Protection VendorMicrosoft Affected N/A Fixed in — No fix listed CNA
- Microsoft Security Essentials VendorMicrosoft Affected N/A Fixed in — No fix listed CNA
- Microsoft System Center 2012 Endpoint Protection VendorMicrosoft Affected N/A Fixed in — No fix listed CNA
- Windows Defender VendorMicrosoft Affected N/A Fixed in — No fix listed CNA
CPE configurations NVD · 19
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:microsoft:windows_defender:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:* | 1607 | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_10:1703:*:*:*:*:*:*:* | 1703 | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:* | 1709 | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:itanium:* | r2 sp1 | Running on | Microsoft |
- cpe:2.3:a:microsoft:windows_defender:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:* Versions 1607 Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_10:1703:*:*:*:*:*:*:* Versions 1703 Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:* Versions 1709 Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:itanium:* Versions r2 sp1 Running on ·Microsoft
Show 9 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:* | r2 sp1 | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* | r2 | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:a:microsoft:forefront_endpoint_protection_2010:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:security_essentials:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:system_center_endpoint_protection:*:*:*:*:*:*:*:* | all versions | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:system_center_endpoint_protection:2012:-:*:*:*:*:*:* | 2012 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:system_center_endpoint_protection:2012:r2:*:*:*:*:*:* | 2012 r2 | Vulnerable | Microsoft |
- cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:* Versions r2 sp1 Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* Versions r2 Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:a:microsoft:forefront_endpoint_protection_2010:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:security_essentials:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:system_center_endpoint_protection:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:system_center_endpoint_protection:2012:-:*:*:*:*:*:* Versions 2012 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:system_center_endpoint_protection:2012:r2:*:*:*:*:*:* Versions 2012 r2 Vulnerable ·Microsoft
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-1161
- 2026-10-03 Alias added: GHSA-32j3-hv3j-q9qq
More Microsoft Forefront Endpoint Protection 2010 vulnerabilities
- TI-2018-00915 Out-of-bounds write in Microsoft Windows Defender CVSS 3.1HIGH 8.8
- TI-2019-00976 A denial of service vulnerability exists when Microsoft Defender improperly handles… CVSS 3.1HIGH 7.5
- TI-2020-01134 Incorrect permission assignment in Microsoft Forefront Endpoint Protection CVSS 3.1HIGH 7.8
- TI-2020-01128 An elevation of privilege vulnerability exists in Windows Defender that leads arbitrary… CVSS 3.1HIGH 7.8
- TI-2011-00036 Microsoft Malware Protection Engine before 1.1.6603.0, as used in Microsoft Malicious… CVSS 2.0HIGH 7.2
- TI-2020-01420 An elevation of privilege vulnerability exists when the MpSigStub.exe for Defender allows… CVSS 3.1HIGH 7.1
Sources
- CVE-2019-1161 · CVE Program
- CVE-2019-1161 · NVD
- FIRST EPSS
- GHSA-32j3-hv3j-q9qq · GitHub Advisory Database · CC BY 4.0
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