CVE-2026-73027
HIGHCVSS 7.8/10EPSS 0.41%
Last modified
CVE-2026-73027 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. External control of system or configuration setting in Windows Setup Files Cleanup allows an authorized attacker to elevate privileges locally.. EPSS estimates a 0.41% chance of exploitation in the next 30 days.
Description
External control of system or configuration setting in Windows Setup Files Cleanup allows an authorized attacker to elevate privileges locally.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 1607 | < 10.0.14393.9612 |
| Microsoft | Windows 10 1809 | < 10.0.17763.9376 |
| Microsoft | Windows 10 21h2 | < 10.0.19044.7807 |
| Microsoft | Windows 10 22h2 | < 10.0.19045.7807 |
| Microsoft | Windows 11 23h2 | < 10.0.22631.7652 |
| Microsoft | Windows 11 24h2 | < 10.0.26100.9711 |
| Microsoft | Windows 11 25h2 | < 10.0.26200.9711 |
| Microsoft | Windows 11 26h1 | < 10.0.28000.3231 |
| Microsoft | Windows 11 26h2 | < 10.0.26300.9711 |
| Microsoft | Windows Server 2012 | All versions |
| Microsoft | Windows Server 2012 | r2 |
| Microsoft | Windows Server 2016 | < 10.0.14393.9612 |
| Microsoft | Windows Server 2019 | < 10.0.17763.9376 |
| Microsoft | Windows Server 2022 | < 10.0.20348.5761 |
| Microsoft | Windows Server 2025 | < 10.0.26100.33650 |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-73027Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-73027?
External control of system or configuration setting in Windows Setup Files Cleanup allows an authorized attacker to elevate privileges locally.
How severe is CVE-2026-73027?
CVE-2026-73027 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.41% probability of exploitation in the next 30 days.
How do I fix CVE-2026-73027?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-73021Heap-based buffer overflow in Windows Biometric Service allo…7.8
- CVE-2026-73022Use after free in Windows Modern Device Management (MDM) all…7
- CVE-2026-73023Heap-based buffer overflow in Windows Imaging Component allo…8.8
- CVE-2026-73024Heap-based buffer overflow in Windows Services for NFS ONCRP…7.8
- CVE-2026-73025Weak authentication in Windows iSCSI allows an unauthorized …9.8
- CVE-2026-73026Heap-based buffer overflow in Windows Biometric Service allo…7.8
- CVE-2026-73028Improper access control in SQL Server allows an authorized a…8.8
- CVE-2026-73029Buffer over-read in SQL Server allows an authorized attacker…6.5
- CVE-2026-7303A security flaw has been discovered in Xuxueli xxl-job up to…3.7
- CVE-2026-73030unearth through 0.18.2, fixed in commit 6c78164, contains a …8.1
- CVE-2026-73031telegram-search contains a stored cross-site scripting vulne…8.7
- CVE-2026-73032PapersGPT for Zotero 0.6.1 contains a remote code execution …9.6
Are you affected by CVE-2026-73027?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST