First day on Intigriti: our agent harness found and proved a remote code execution bug, paid €3,000.

CVE-2026-71336

HighCVSS 8.8/10Last modified Sep 24, 2026

Description

Integer overflow or wraparound in Windows Work Folder Service allows an authorized attacker to execute code over a network.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

Affected software

Vendor	Product	Versions
Microsoft	Windows 10 Version 1607	>= 10.0.14393.0, < 10.0.14393.9512
Microsoft	Windows 10 Version 1809	>= 10.0.17763.0, < 10.0.17763.9245
Microsoft	Windows Server 2012 R2	>= 6.3.9600.0, < 6.3.9600.23398
Microsoft	Windows Server 2012 R2 (Server Core installation)	>= 6.3.9600.0, < 6.3.9600.23398
Microsoft	Windows Server 2016	>= 10.0.14393.0, < 10.0.14393.9512
Microsoft	Windows Server 2016 (Server Core installation)	>= 10.0.14393.0, < 10.0.14393.9512
Microsoft	Windows Server 2019	>= 10.0.17763.0, < 10.0.17763.9245
Microsoft	Windows Server 2019 (Server Core installation)	>= 10.0.17763.0, < 10.0.17763.9245
Microsoft	Windows Server 2022	>= 10.0.20348.0, < 10.0.20348.5622
Microsoft	Windows Server 2025	>= 10.0.26100.0, < 10.0.26100.33438
Microsoft	Windows Server 2025 (Server Core installation)	>= 10.0.26100.0, < 10.0.26100.33438

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-71336Patch, Vendor Advisory

Timeline

Published: Sep 8, 2026
Last modified: Sep 24, 2026
NVD status: Analyzed

Related CVEs from 2026

CVE-2026-713377.8Stack-based buffer overflow in Windows Storage Management Provider allows an authorized attacker to elevate privileges locally.CVE-2026-713386.4Double free in Windows Failover Cluster allows an authorized attacker to elevate privileges locally.CVE-2026-713396.7Heap-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.CVE-2026-71344.7A vulnerability was identified in code-projects Online Lot Reservation System 1.0. Affected is an unknown function of the file /edithousepic CVE-2026-713407.0Use after free in Windows File History Service allows an authorized attacker to elevate privileges locally.CVE-2026-713415.5Out-of-bounds read in Windows Partition Management Driver allows an authorized attacker to disclose information locally.CVE-2026-713427.0Use after free in Windows Remote Access Connection Manager allows an authorized attacker to elevate privileges locally.CVE-2026-713437.8Heap-based buffer overflow in Windows Remote Access Connection Manager allows an authorized attacker to execute code locally.CVE-2026-713457.8Out-of-bounds write in Windows Spaceport.sys allows an authorized attacker to execute code locally.CVE-2026-713476.4Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Security Center allows an authorized CVE-2026-713486.8Heap-based buffer overflow in Windows Spaceport.sys allows an unauthorized attacker to execute code with a physical attack.CVE-2026-713496.8Heap-based buffer overflow in Windows Spaceport.sys allows an unauthorized attacker to execute code with a physical attack.

CVE-2026-71336: High severity, CVSS 8.8 | Vulnix