9.8crit
CVE-2026-78445
Windows Services for NFS ONCRPC XDR Driver Remote Code Execution Vulnerability
Published 1 mo ago · modified 7 d ago · JSON
CVSS
9.8
v3.1 · CNA
CISA KEV
No
not known exploited
EPSS
1.0%
percentile 62%
Public exploits
0
none known
Summary
Use after free in Windows Services for NFS ONCRPC XDR Driver allows an unauthorized attacker to execute code over a network.
CISA SSVC assessment
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 1 mo ago
Exploit prediction (EPSS)
0.97% probability of exploitation in the next 30 days, higher than 62% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Microsoft Windows Server 2012
- Microsoft Windows Server 2012 (Server Core installation)
- Microsoft Windows Server 2012 R2
- Microsoft Windows Server 2012 R2 (Server Core installation)
- Microsoft Windows Server 2016
- Microsoft Windows Server 2016 (Server Core installation)
- Microsoft Windows Server 2019
- Microsoft Windows Server 2019 (Server Core installation)
- Microsoft Windows Server 2022
- Microsoft Windows Server 2025
- Microsoft Windows Server 2025 (Server Core installation)
Classification
- Weakness
- CWE-416 Use After Free
References
- msrc.microsoft.com /update-guide/vulnerability/CVE-2026-78445 · vendor-advisory, patch
Sources
- CVE List: CVE-2026-78445
- NVD: CVE-2026-78445
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