CVE-2025-37730

Logstash Improper Certificate Validation in TCP output

Published May 6, 2025 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
EUVD EUVD EUVD-2025-13629 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.
History
Type Values Removed Values Added
Metrics epss

{'score': 0.00021}

epss

{'score': 0.00022}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Logstash Improper Certificate Validation in TCP output
Weaknesses CWE-295
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
elastic
Published
Updated
May 6, 2025, 5:51 PM
Reserved
Apr 16, 2025, 3:24 AM
Status
Deferred
Published
May 6, 2025, 6:15 PM
Modified
Jun 17, 2026, 9:15 AM