CVE-2025-29956 Windows SMB Information Disclosure Vulnerability
An authorized attacker can disclose sensitive information over the network via a buffer over-read in Windows SMB.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-29956?
CVE-2025-29956 is a medium-severity vulnerability in Microsoft Windows 10 1507, published on 13 May 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Buffer over-read in Windows SMB allows an authorized attacker to disclose information over a network.
Which versions are affected by CVE-2025-29956?
It affects 15 products.
Products include Microsoft Windows 10 1507, Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, Microsoft Windows 11 22h2 and 9 more.
How do I fix CVE-2025-29956?
No fix has been published for CVE-2025-29956 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-29956 being exploited?
There is no known exploitation of CVE-2025-29956 in the wild and no public exploit code.
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-mjqj-43pc-37r9.