Vulnerability in Microsoft Windows 10 1809
CVE-2026-72989
Use of uninitialized resource in Windows Failover Cluster allows an unauthorized attacker to disclose information over a network.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.010 (63.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 63.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Microsoft Windows 10 1809
- Microsoft Windows 10 Version 1809
- Microsoft Windows Server 2019
- Microsoft Windows Server 2019
- Microsoft Windows Server 2019 (Server Core Installation)
- Microsoft Windows Server 2022
- Microsoft Windows Server 2022
- Microsoft Windows Server 2025
- Microsoft Windows Server 2025
- Microsoft Windows Server 2025 (Server Core Installation)
Weakness classification (CWE)
References
- Windows Failover Cluster Information Disclosure Vulnerability (vendor-advisory, Patch, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-72989?
- CVE-2026-72989 is a high-severity vulnerability in Microsoft Windows 10 1809, classified under Use of Uninitialized Resource. CVSS score: 7.5/10. Published 2026-09-08.
- How severe is CVE-2026-72989?
- High severity. CVSS v3 base score is 7.5 out of 10.