CVE intelligence

CVE-2026-49799

Vulnerability intelligence

Published Jul 14, 2026Sources checked Oct 28, 2026

6.5MEDIUMCVSS out of 10

What this means

Review the available evidence

CVE-2026-49799 and is rated Medium severity with a CVSS score of 6.5. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

What to do next

Remediation and response

Microsoft Security Response Center guidance

Vendor revision: Jul 14, 2026

Vendor remediation details

Install KB5099538. Install KB5099540. Install KB5099539. Install KB5099536. Install KB5101650. Install KB5101649. Install KB5099535. Install KB5099445. Install KB5099444.

Vendor-listed releases

10.0.17763.9020
10.0.20348.5386
10.0.19044.7548
10.0.19045.7548
10.0.26100.33158
10.0.26200.8875
10.0.26100.8875
10.0.28000.2525
10.0.14393.9339
6.2.9200.26226
6.3.9600.23291

CISA KEVNot listedBased on the latest collected catalog

EPSS1.1%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-49799?

Uncontrolled resource consumption in Windows Local Security Authority Subsystem Service (LSASS) allows an authorized attacker to deny service over a network.

Source: NVD