RPC Endpoint Mapper Service Elevation of Privilege Vulnerability
Priority LOW 35Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
RPC Endpoint Mapper Service Elevation of Privilege Vulnerability
Why it matters now
EPSS 0.00594 48th percentileScored 2026-11-07
Fix Fixed Windows 7 (Microsoft): publicationWindows 7 Service Pack 1 (Microsoft): publication+4 more products
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 | Windows 7 | 6.1.0 to before publication | publication | Patch available | CNA |
| Microsoft | Windows 7 Service Pack 1 | 6.1.0 to before publication | publication | Patch available | CNA |
| Microsoft | Windows Server 2008 R2 Service Pack 1 | 6.1.0 to before publication | publication | Patch available | CNA |
| Microsoft | Windows Server 2008 R2 Service Pack 1 (Server Core installation) | 6.0.0 to before publication | publication | Patch available | CNA |
| Microsoft | Windows Server 2012 | 6.2.0 to before publication | publication | Patch available | CNA |
| Microsoft | Windows Server 2012 (Server Core installation) | 6.2.0 to before publication | publication | Patch available | CNA |
- Windows 7 VendorMicrosoft Affected 6.1.0 to before publication Fixed in publication Patch available CNA
- Windows 7 Service Pack 1 VendorMicrosoft Affected 6.1.0 to before publication Fixed in publication Patch available CNA
- Windows Server 2008 R2 Service Pack 1 VendorMicrosoft Affected 6.1.0 to before publication Fixed in publication Patch available CNA
- Windows Server 2008 R2 Service Pack 1 (Server Core installation) VendorMicrosoft Affected 6.0.0 to before publication Fixed in publication Patch available CNA
- Windows Server 2012 VendorMicrosoft Affected 6.2.0 to before publication Fixed in publication Patch available CNA
- Windows Server 2012 (Server Core installation) VendorMicrosoft Affected 6.2.0 to before publication Fixed in publication Patch available CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:* | r2 sp1 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Microsoft |
- cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:* Versions r2 sp1 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
Remediation
- Fix · CNA Windows 7 (Microsoft) Fixed in publication
- Fix · CNA Windows 7 Service Pack 1 (Microsoft) Fixed in publication
- Fix · CNA Windows Server 2008 R2 Service Pack 1 (Microsoft) Fixed in publication
- Fix · CNA Windows Server 2008 R2 Service Pack 1 (Server Core installation) (Microsoft) Fixed in publication
- Fix · CNA Windows Server 2012 (Microsoft) Fixed in publication
- Fix · CNA Windows Server 2012 (Server Core installation) (Microsoft) Fixed in publication
Timeline
- 2026-10-02 Threatist record created from CVE-2021-27091
- 2026-10-03 Alias added: GHSA-vcr7-q7v7-v84f
More Microsoft Windows 7 vulnerabilities
- TI-2019-00485 Use after free in Microsoft Windows KEVCVSS 3.1CRITICAL 9.8
- TI-2017-06077 Microsoft Windows XP SP3, Windows XP x64 XP2, Windows Server 2003 SP2, Windows Vista… KEVCVSS 3.1CRITICAL 9.8
- TI-2015-01465 HTTP.sys in Microsoft Windows 7 SP1, Windows Server 2008 R2 SP1, Windows 8, Windows 8.1… KEVCVSS 3.1CRITICAL 9.8
- TI-2022-19649 Windows Scripting Languages Remote Code Execution Vulnerability KEVCVSS 3.1HIGH 8.8
- TI-2021-17496 Microsoft MSHTML Remote Code Execution Vulnerability KEVCVSS 3.1HIGH 8.8
- TI-2021-13480 Scripting Engine Memory Corruption Vulnerability KEVCVSS 3.1HIGH 8.8
Sources
- CVE-2021-27091 · CVE Program
- CVE-2021-27091 · NVD
- FIRST EPSS
- GHSA-vcr7-q7v7-v84f · 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