CVE-2025-9640

MEDIUM EPSS 33.8%
Published Oct 15, 20258mo ago · Modified Jun 17, 20261w ago
4.3 CVSS 3.1
Medium
Find Similar
Published Oct 15, 2025 8mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
4.3
Exploitability
2.8
Impact
1.4
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
33.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-908

References 6

  • openwall.com http://www.openwall.com/lists/oss-security/2025/10/15/2
  • openwall.com http://www.openwall.com/lists/oss-security/2025/10/16/2
  • access.redhat.com https://access.redhat.com/security/cve/CVE-2025-9640
  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2391698
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/11/msg00027.html
  • samba.org https://www.samba.org/samba/history/security.html

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.