Oct 2026: Microsoft OpenSSH for Windows Elevation of Privilege Vulnerability
CVE-2026-97811 Published on October 13, 2026
Microsoft OpenSSH for Windows Elevation of Privilege Vulnerability
Double free in OpenSSH for Windows allows an authorized attacker to elevate privileges locally.
Weakness Types
What is a Double-free Vulnerability?
The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. When a program calls free() twice with the same argument, the program's memory management data structures become corrupted. This corruption can cause the program to crash or, in some circumstances, cause two later calls to malloc() to return the same pointer. If malloc() returns the same value twice and the program later gives the attacker control over the data that is written into this doubly-allocated memory, the program becomes vulnerable to a buffer overflow attack.
CVE-2026-97811 has been classified to as a Double-free vulnerability or weakness.
What is a Resource Exhaustion Vulnerability?
The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.
CVE-2026-97811 has been classified to as a Resource Exhaustion vulnerability or weakness.
Products Associated with CVE-2026-97811
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Affected Versions
Microsoft Windows 10 Version 1809:- Version 10.0.17763.0 and below 10.0.17763.9376 is affected.
- Version 10.0.19044.0 and below 10.0.19044.7807 is affected.
- Version 10.0.19045.0 and below 10.0.19044.7807 is affected.
- Version 10.0.22631.0 and below 10.0.22631.7652 is affected.
- Version 10.0.22631.0 and below 10.0.22631.7652 is affected.
- Version 10.0.26100.0 and below 10.0.26100.9711 is affected.
- Version 10.0.26200.0 and below 10.0.26200.9711 is affected.
- Version 10.0.28000.0 and below 10.0.28000.3231 is affected.
- Version 10.0.26300.0 and below 10.0.26300.9711 is affected.
- Version 10.0.17763.0 and below 10.0.17763.9376 is affected.
- Version 10.0.17763.0 and below 10.0.17763.9376 is affected.
- Version 10.0.20348.0 and below 10.0.20348.5761 is affected.
- Version 10.0.26100.0 and below 10.0.26100.33650 is affected.
- Version 10.0.26100.0 and below 10.0.26100.33650 is affected.