CVE-2025-9640
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-10-15

Last updated on: 2025-11-26

Assigner: Red Hat, Inc.

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.
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Meta Information
Published
2025-10-15
Last Modified
2025-11-26
Generated
2026-06-16
AI Q&A
2025-10-15
EPSS Evaluated
2026-06-15
NVD
CVE-2025-9640
Affected Vendors & Products
Showing 4 associated CPEs
Vendor Product Version / Range
samba samba 4.22.5
samba samba 4.21.9
samba samba *
samba samba 4.23.2
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-908 The product uses or accesses a resource that has not been initialized.
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Executive Summary

This vulnerability in Samba's vfs_streams_xattr module involves uninitialized heap memory being written into alternate data streams. An authenticated user can exploit this flaw to read leftover memory content, which may contain sensitive information, leading to an information disclosure issue. [1]

Impact Analysis

The vulnerability allows an authenticated user to access residual memory content that might include sensitive data. This can result in unauthorized disclosure of information, potentially compromising confidentiality within systems running Samba. [1]

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