CVE-2026-78446
Low
No strong exploitation signal.
CVSS base
5.3
MEDIUM
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS — probability of exploitation (30 days)
0.6%
47.8th percentile
CISA KEV
Not listed
Weakness / dates
CWE-416
Published 2026-09-08 · modified 2026-09-11
CVSS breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
| Attack Vector | N | Network |
| Attack Complexity | H | High |
| Privileges Required | L | Low |
| User Interaction | N | None |
| Scope | U | Unchanged |
| Confidentiality | N | None |
| Integrity | N | None |
| Availability | H | High |
Timeline
- 2026-09-08 — Published (NVD)
- 2026-09-11 — Last modified (NVD)
Description
Use after free in Windows Distributed File System (DFS) allows an authorized attacker to deny service over a network.