CVE-2019-0703 Microsoft Windows SMB Information Disclosure
Attackers can exploit Windows SMB Server to disclose sensitive information, requiring immediate patching for Windows and Windows Server systems.
- Exploited in the wild
- Since 23 May 2022
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-0703?
CVE-2019-0703 is a medium-severity vulnerability in Microsoft Windows 10 1507, published on 8 Apr 2019. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An information disclosure vulnerability exists in the way that the Windows SMB Server handles certain requests, aka 'Windows SMB Information Disclosure Vulnerability'. This CVE ID is unique from CVE-2019-0704, CVE-2019-0821.
Which versions are affected by CVE-2019-0703?
It affects 15 products.
Products include Microsoft Windows 10 1507, Microsoft Windows 10 1607, Microsoft Windows 10 1703, Microsoft Windows 10 1709, Microsoft Windows 10 1803, Microsoft Windows 10 1809 and 9 more.
How do I fix CVE-2019-0703?
No fix has been published for CVE-2019-0703 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 13 Jun 2022.
Is CVE-2019-0703 being exploited?
Yes. Attackers have exploited CVE-2019-0703 in the wild since at least 23 May 2022.
Other vulnerabilities in Microsoft Windows 10 1507
- CVE-2017-8543 Microsoft Windows Search Remote Code Execution
- CVE-2025-33053 Microsoft Windows External Control of File Name or Path
- CVE-2025-33073 Microsoft Windows SMB Client Improper Access Control
- CVE-2024-49039 Microsoft Windows Task Scheduler Privilege Escalation
- CVE-2024-43461 Microsoft Windows MSHTML Platform Spoofing
Sources
Also known as GHSA-4363-m599-g24f.