CVE-2026-78445

CRITICAL

INFO Priority: 0.10 BB Relevance: 80/100

Published: 2026-09-08 Modified: 2026-10-30 First seen: 2026-10-30 Status: active

Network Low Complexity No Auth No Interaction Conf. Impact Integ. Impact

AV: Network

AC: Low

PR: None

UI: None

S: Unchanged

C: High

I: High

A: High

Use after free in Windows Services for NFS ONCRPC XDR Driver allows an unauthorized attacker to execute code over a network.

Vendor	Product	Version
Microsoft	Windows Server 2012	6.2.9200.0 < 6.2.9200.26349
Microsoft	Windows Server 2012 (Server Core installation)	6.2.9200.0 < 6.2.9200.26349
Microsoft	Windows Server 2012 R2	6.3.9600.0 < 6.3.9600.23398
Microsoft	Windows Server 2012 R2 (Server Core installation)	6.3.9600.0 < 6.3.9600.23398
Microsoft	Windows Server 2016	10.0.14393.0 < 10.0.14393.9512
Microsoft	Windows Server 2016 (Server Core installation)	10.0.14393.0 < 10.0.14393.9512
Microsoft	Windows Server 2019	10.0.17763.0 < 10.0.17763.9245
Microsoft	Windows Server 2019 (Server Core installation)	10.0.17763.0 < 10.0.17763.9245
Microsoft	Windows Server 2022	10.0.20348.0 < 10.0.20348.5622
Microsoft	Windows Server 2025	10.0.26100.0 < 10.0.26100.33438
Microsoft	Windows Server 2025 (Server Core installation)	10.0.26100.0 < 10.0.26100.33438

vendor-advisory patch

80 / 100

✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

9.8 / 10.0 v3.1

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

0.97%

Raw Score 0.009740

Percentile 62.0%

Date 2026-10-30

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