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Vulnerabilities CVE-2025-9640

CVE-2025-9640

Medium
Open
TLP:CLEAR

Samba: vfs_streams_xattr uninitialized memory write possible

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Description

A flaw was found in Samba, in the vfs_streams_xattr module, where uninitialized heap memory could be written into alternate data streams. This allows an authenticated user to read residual memory content that may include sensitive data, resulting in an information disclosure vulnerability.

Details

CVSS Score
4.3
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Confidence
90%
Published
Oct 15, 2025
Last Modified
Aug 21, 2026
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