Windows Local Security Authority Subsystem Service (LSASS) Denial of Service Vulnerability
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-49799US | — | — | ||
Uncontrolled resource consumption in Windows Local Security Authority Subsystem Service (LSASS) allows an authorized attacker to deny service over a network. | ||||
references
External citations — patches, advisories, analysis.
- CVE-2026-49799 Windows Local Security Authority Subsystem Service (LSASS) Denial of Service Vulnerability - CSAFself
- CVE-2026-49799 Windows Local Security Authority Subsystem Service (LSASS) Denial of Service Vulnerability - HTMLself
- Microsoft Support Lifecycleexternal
- Common Vulnerability Scoring Systemexternal
- Microsoft Exploitability Indexexternal
remediations (27)
- FixedWindows 10 Version 1607 for 32-bit Systems
10.0.14393.9339:Security Update:https://support.microsoft.com/help/5099535
https://support.microsoft.com/help/5099535 - FixedWindows 10 Version 1607 for x64-based Systems
10.0.14393.9339:Security Update:https://support.microsoft.com/help/5099535
https://support.microsoft.com/help/5099535 - FixedWindows 10 Version 1809 for 32-bit Systems
10.0.17763.9020:Security Update:https://support.microsoft.com/help/5099538
https://support.microsoft.com/help/5099538 - FixedWindows 10 Version 1809 for x64-based Systems
10.0.17763.9020:Security Update:https://support.microsoft.com/help/5099538
https://support.microsoft.com/help/5099538 - FixedWindows 10 Version 21H2 for 32-bit Systems
10.0.19044.7548:Security Update:https://support.microsoft.com/help/5099539
https://support.microsoft.com/help/5099539 - FixedWindows 10 Version 21H2 for ARM64-based Systems
10.0.19044.7548:Security Update:https://support.microsoft.com/help/5099539
https://support.microsoft.com/help/5099539 - FixedWindows 10 Version 21H2 for x64-based Systems
10.0.19044.7548:Security Update:https://support.microsoft.com/help/5099539
https://support.microsoft.com/help/5099539 - FixedWindows 10 Version 22H2 for 32-bit Systems
10.0.19045.7548:Security Update:https://support.microsoft.com/help/5099539
https://support.microsoft.com/help/5099539 - FixedWindows 10 Version 22H2 for ARM64-based Systems
10.0.19045.7548:Security Update:https://support.microsoft.com/help/5099539
https://support.microsoft.com/help/5099539 - FixedWindows 10 Version 22H2 for x64-based Systems
10.0.19045.7548:Security Update:https://support.microsoft.com/help/5099539
https://support.microsoft.com/help/5099539 - FixedWindows 11 Version 24H2 for ARM64-based Systems
10.0.26100.8875:Security Update:https://support.microsoft.com/help/5101650
https://support.microsoft.com/help/5101650 - FixedWindows 11 Version 24H2 for x64-based Systems
10.0.26100.8875:Security Update:https://support.microsoft.com/help/5101650
https://support.microsoft.com/help/5101650 - FixedWindows 11 Version 25H2 for ARM64-based Systems
10.0.26200.8875:Security Update:https://support.microsoft.com/help/5101650
https://support.microsoft.com/help/5101650 - FixedWindows 11 Version 25H2 for x64-based Systems
10.0.26200.8875:Security Update:https://support.microsoft.com/help/5101650
https://support.microsoft.com/help/5101650 - FixedWindows 11 Version 26H1 for ARM64-based Systems
10.0.28000.2525:Security Update:https://support.microsoft.com/help/5101649
https://support.microsoft.com/help/5101649 - FixedWindows 11 version 26H1 for x64-based Systems
10.0.28000.2525:Security Update:https://support.microsoft.com/help/5101649
https://support.microsoft.com/help/5101649 - FixedWindows Server 2012
6.2.9200.26226:Monthly Rollup:https://support.microsoft.com/help/5099445
https://support.microsoft.com/help/5099445 - FixedWindows Server 2012 (Server Core installation)
6.2.9200.26226:Monthly Rollup:https://support.microsoft.com/help/5099445
https://support.microsoft.com/help/5099445 - FixedWindows Server 2012 R2
6.3.9600.23291:Monthly Rollup:https://support.microsoft.com/help/5099444
https://support.microsoft.com/help/5099444 - FixedWindows Server 2012 R2 (Server Core installation)
6.3.9600.23291:Monthly Rollup:https://support.microsoft.com/help/5099444
https://support.microsoft.com/help/5099444 - FixedWindows Server 2016
10.0.14393.9339:Security Update:https://support.microsoft.com/help/5099535
https://support.microsoft.com/help/5099535 - FixedWindows Server 2016 (Server Core installation)
10.0.14393.9339:Security Update:https://support.microsoft.com/help/5099535
https://support.microsoft.com/help/5099535 - FixedWindows Server 2019
10.0.17763.9020:Security Update:https://support.microsoft.com/help/5099538
https://support.microsoft.com/help/5099538 - FixedWindows Server 2019 (Server Core installation)
10.0.17763.9020:Security Update:https://support.microsoft.com/help/5099538
https://support.microsoft.com/help/5099538 - FixedWindows Server 2022
10.0.20348.5386:Security Update:https://support.microsoft.com/help/5099540
https://support.microsoft.com/help/5099540 - FixedWindows Server 2025
10.0.26100.33158:Security Update:https://support.microsoft.com/help/5099536
https://support.microsoft.com/help/5099536 - FixedWindows Server 2025 (Server Core installation)
10.0.26100.33158:Security Update:https://support.microsoft.com/help/5099536
https://support.microsoft.com/help/5099536
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