CVE-2026-56857EPSS p40.5%
CVE-2026-56857CVE-2026-56857
Description
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).
Scoring
| CVSS | 9.8 () |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 0.49% probability of exploitation · percentile 40.5% · 2026-10-10T12:00:23Z |
| Last modified | 2026-10-09 |