Out-of-bounds Read in Microsoft Windows 10 Version 1809
CVE-2026-83516
Out-of-bounds read in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthorized attacker to deny service over a network.
Vulnerability class: Buffer Overflow
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:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Microsoft Windows 10 Version 1809
- Microsoft Windows 11 Version 24h2
- Microsoft Windows 11 Version 25h2
- Microsoft Windows 11 Version 26h1
- Microsoft Windows 11 Version 26h2
- 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)
Weakness classification (CWE)
References
- Windows Local Security Authority Subsystem Service (LSASS) Denial of Service Vulnerability (vendor-advisory, patch)
Frequently asked questions
- What is CVE-2026-83516?
- CVE-2026-83516 is a high-severity vulnerability in Microsoft Windows 10 Version 1809, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-10-13.
- How severe is CVE-2026-83516?
- High severity. CVSS v3 base score is 7.5 out of 10.