CVE-2026-83759
HIGHCVSS 8.8/10EPSS 0.92%
Last modified
CVE-2026-83759 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Improper control of generation of code ('code injection') in Windows Encrypting File System (EFS) allows an authorized attacker to execute code over a network.. EPSS estimates a 0.92% chance of exploitation in the next 30 days.
Description
Improper control of generation of code ('code injection') in Windows Encrypting File System (EFS) allows an authorized attacker to execute code over a network.
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 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-2026-83759Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-83759?
Improper control of generation of code ('code injection') in Windows Encrypting File System (EFS) allows an authorized attacker to execute code over a network.
How severe is CVE-2026-83759?
CVE-2026-83759 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.92% probability of exploitation in the next 30 days.
How do I fix CVE-2026-83759?
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-2026-83753Heap-based buffer overflow in Windows Camera Frame Server Mo…7.8
- CVE-2026-83754Heap-based buffer overflow in OpenSSH for Windows allows an …7.5
- CVE-2026-83755Use of uninitialized resource in Windows Win32K allows an au…5.5
- CVE-2026-83756Use after free in Windows Win32 Kernel Subsystem allows an a…7.8
- CVE-2026-83757Heap-based buffer overflow in Windows Win32K allows an autho…7.8
- CVE-2026-83758Heap-based buffer overflow in Windows Error Reporting allows…7.8
- CVE-2026-8376Perl versions before 5.40.5-RC1, from 5.41.0 before 5.42.3-R…9.8
- CVE-2026-83760Out-of-bounds read in Microsoft Bluetooth Driver allows an a…5.5
- CVE-2026-83761Use after free in Windows Win32 Kernel Subsystem allows an a…7.8
- CVE-2026-83762Use after free in Windows Win32K allows an authorized attack…7.8
- CVE-2026-83763Access of resource using incompatible type ('type confusion'…7.8
- CVE-2026-83764Incorrect authorization in Windows Clipboard User Service al…5.5
Are you affected by CVE-2026-83759?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST