CVE-2025-37730

MEDIUM EPSS 4.1%

Published May 6, 20251y ago · Modified Jun 17, 20262w ago

6.5 CVSS 3.1

Medium

Published May 6, 2025 1y ago

Last Modified Jun 17, 2026 2w ago

Description

Improper certificate validation in Logstash's TCP output could lead to a man-in-the-middle (MitM) attack in “client” mode, as hostname verification in TCP output was not being performed when the ssl_verification_mode => full was set.

CVSS Details

Base Score

6.5

Exploitability

2.2

Impact

4.2

Vector string

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N

Attack Vector Network

Attack Complexity High

Privileges Required None

User Interaction None

Scope Unchanged

Confidentiality High

Integrity Low

Availability None

Threat Intelligence

EPSS Exploit Probability

4.1% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-295

References 1

discuss.elastic.co https://discuss.elastic.co/t/logstash-8-17-6-8-18-1-and-9-0-1-security-update-esa-2025-08/377869

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.