Windows Backup Engine 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
An elevation of privilege vulnerability exists when the Windows Backup Engine improperly handles memory. To exploit this vulnerability, an attacker would first have to gain execution on the victim system. An attacker could then run a specially crafted application to elevate privileges. The security update addresses the vulnerability by correcting how the Windows Backup Engine handles memory.
Why it matters now
EPSS 0.00795 56th percentileScored 2026-11-07
Fix Fixed Windows 10 Version 2004 (Microsoft): publicationWindows 10 Version 1803 (Microsoft): publication+12 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 10 Version 2004 | 10.0.0 to before publication | publication | Patch available | CNA |
| Microsoft | Windows 10 Version 1803 | 10.0.0 to before publication | publication | Patch available | CNA |
| Microsoft | Windows 10 Version 1809 | 10.0.0 to before publication | publication | Patch available | CNA |
| Microsoft | Windows 10 Version 1909 | 10.0.0 to before publication | publication | Patch available | CNA |
| Microsoft | Windows 10 Version 1709 for 32-bit Systems | 10.0.0 to before publication | publication | Patch available | CNA |
| Microsoft | Windows 10 Version 1709 | 10.0.0 to before publication | publication | Patch available | CNA |
| Microsoft | Windows 10 Version 1903 for 32-bit Systems | 10.0.0 to before publication | publication | Patch available | CNA |
| Microsoft | Windows 10 Version 1903 for x64-based Systems | 10.0.0 to before publication | publication | Patch available | CNA |
| Microsoft | Windows 10 Version 1903 for ARM64-based Systems | 10.0.0 to before publication | publication | Patch available | CNA |
| Microsoft | Windows 10 Version 1507 | 10.0.0 to before publication | publication | Patch available | CNA |
| Microsoft | Windows 10 Version 1607 | 10.0.0 to before publication | publication | Patch available | CNA |
| 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 8.1 | 6.3.0 to before publication | publication | Patch available | CNA |
- Windows 10 Version 2004 VendorMicrosoft Affected 10.0.0 to before publication Fixed in publication Patch available CNA
- Windows 10 Version 1803 VendorMicrosoft Affected 10.0.0 to before publication Fixed in publication Patch available CNA
- Windows 10 Version 1809 VendorMicrosoft Affected 10.0.0 to before publication Fixed in publication Patch available CNA
- Windows 10 Version 1909 VendorMicrosoft Affected 10.0.0 to before publication Fixed in publication Patch available CNA
- Windows 10 Version 1709 for 32-bit Systems VendorMicrosoft Affected 10.0.0 to before publication Fixed in publication Patch available CNA
- Windows 10 Version 1709 VendorMicrosoft Affected 10.0.0 to before publication Fixed in publication Patch available CNA
- Windows 10 Version 1903 for 32-bit Systems VendorMicrosoft Affected 10.0.0 to before publication Fixed in publication Patch available CNA
- Windows 10 Version 1903 for x64-based Systems VendorMicrosoft Affected 10.0.0 to before publication Fixed in publication Patch available CNA
- Windows 10 Version 1903 for ARM64-based Systems VendorMicrosoft Affected 10.0.0 to before publication Fixed in publication Patch available CNA
- Windows 10 Version 1507 VendorMicrosoft Affected 10.0.0 to before publication Fixed in publication Patch available CNA
- Windows 10 Version 1607 VendorMicrosoft Affected 10.0.0 to before publication Fixed in 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 8.1 VendorMicrosoft Affected 6.3.0 to before publication Fixed in publication Patch available CNA
CPE configurations NVD · 11
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:* | 1607 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:* | 1709 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:*:* | 1803 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:* | 1809 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:*:* | 1903 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:*:* | 1909 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:*:* | 2004 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Microsoft |
- cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:* Versions 1607 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:* Versions 1709 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:*:* Versions 1803 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:* Versions 1809 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:*:* Versions 1903 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:*:* Versions 1909 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:*:* Versions 2004 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
Remediation
- Fix · CNA Windows 10 Version 2004 (Microsoft) Fixed in publication
- Fix · CNA Windows 10 Version 1803 (Microsoft) Fixed in publication
- Fix · CNA Windows 10 Version 1809 (Microsoft) Fixed in publication
- Fix · CNA Windows 10 Version 1909 (Microsoft) Fixed in publication
- Fix · CNA Windows 10 Version 1709 for 32-bit Systems (Microsoft) Fixed in publication
- Fix · CNA Windows 10 Version 1709 (Microsoft) Fixed in publication
- Fix · CNA Windows 10 Version 1903 for 32-bit Systems (Microsoft) Fixed in publication
- Fix · CNA Windows 10 Version 1903 for x64-based Systems (Microsoft) Fixed in publication
- Fix · CNA Windows 10 Version 1903 for ARM64-based Systems (Microsoft) Fixed in publication
- Fix · CNA Windows 10 Version 1507 (Microsoft) Fixed in publication
- Fix · CNA Windows 10 Version 1607 (Microsoft) Fixed in publication
- Fix · CNA Windows 7 (Microsoft) Fixed in publication
- Fix · CNA Windows 7 Service Pack 1 (Microsoft) Fixed in publication
- Fix · CNA Windows 8.1 (Microsoft) Fixed in publication
Timeline
- 2026-10-02 Threatist record created from CVE-2020-1551
- 2026-10-03 Alias added: GHSA-3fm7-mwcq-hr7j
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Sources
- CVE-2020-1551 · CVE Program
- CVE-2020-1551 · NVD
- FIRST EPSS
- GHSA-3fm7-mwcq-hr7j · 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