Vulnerability in Red Hat Enterprise Linux 10

CVE-2025-9640

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.

EPSS: 0.004 (35.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2025-9640?
CVE-2025-9640 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, classified under Use of Uninitialized Resource. CVSS score: 4.3/10. Published 2025-10-15.
How severe is CVE-2025-9640?
Medium severity. CVSS v3 base score is 4.3 out of 10.