CVE-2026-49799
Windows Local Security Authority Subsystem Service (LSASS) Denial of Service vulnerability
MSRC advisory July 14, 2026
Alert details
- Source feed
- Microsoft MSRC
- CVE ID
- CVE-2026-49799
- Affected products
- Windows Local Security Authority Subsystem Service (LSASS) Denial of Service · Microsoft Windows Local Security Authority Subsystem Service (LSASS) Denial of Service · Microsoft
What happened
Uncontrolled resource consumption in Windows Local Security Authority Subsystem Service (LSASS) allows an authorized attacker to deny service over a network.
What it means for your business
Windows Local Security Authority Subsystem Service (LSASS) Denial of Service vulnerability (CVE-2026-49799) was added to Microsoft’s security update guidance. Uncontrolled resource consumption in Windows Local Security Authority Subsystem Service (LSASS) allows an authorized attacker to deny service over a network. If you need help checking exposure, call (864) 335-9223.
Sources
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