CVE-2026-49801
Windows SMB Information Disclosure vulnerability
MSRC advisory July 14, 2026
Alert details
- Source feed
- Microsoft MSRC
- CVE ID
- CVE-2026-49801
- Affected products
- Windows SMB Information Disclosure · Microsoft Windows SMB Information Disclosure · Microsoft
What happened
Use of uninitialized resource in Windows SMB allows an authorized attacker to disclose information locally.
What it means for your business
Windows SMB Information Disclosure vulnerability (CVE-2026-49801) was added to Microsoft’s security update guidance. Use of uninitialized resource in Windows SMB allows an authorized attacker to disclose information locally. If you need help checking exposure, call (864) 335-9223.
Sources
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