CVE-2026-56857
On Windows, when the target of Root.Mkdir or Root.MkdirAll is a junction pointing to an empty location, the operation can create a directory
CVSS
9.8
Critical
EPSS
0.5%
p41
KEV
—
Exploit Today
12
0-100
Published: Oct 8, 2026 · Last modified: Oct 9, 2026 · CWE-1386
0.2%EPSS · 30 days0.5%
2026-10-092026-10-23
On Windows, when the target of Root.Mkdir or Root.MkdirAll is a junction pointing to an empty location, the operation can create a directory at the junction target even when that target is located outside the root. This only applies to operations where the last path component is a junction (path/to/junction, but not path/junction/target).
CVECVSSEPSSKEVRExploitTitleMod.
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