There is a cypher injection issue in LogonTracer prior to v2.0.0. If specially crafted Windows event log data is loaded, the contents of the database may be altered.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Active

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Japan Computer Emergency Response Team Coordination Center (jpcert/cc)
  • Logontracer
Jpcert
  • Logontracer

Configuration 1 [-]

cpe:2.3:a:jpcert:logontracer:*:*:*:*:*:*:*:*

No data.

References
Link Providers
https://jvn.jp/en/jp/JVN57877356/ cve-icon cve-icon
https://www.jpcert.or.jp/press/2026/PR20260423.html cve-icon cve-icon
History

Tue, 28 Apr 2026 18:30:00 +0000

Type Values Removed Values Added
First Time appeared Jpcert
Jpcert logontracer
CPEs cpe:2.3:a:jpcert:logontracer:*:*:*:*:*:*:*:*
Vendors & Products Jpcert
Jpcert logontracer

Tue, 28 Apr 2026 05:15:00 +0000

Type Values Removed Values Added
Title Cypher Injection in LogonTracer Permitting Database Modification

Mon, 27 Apr 2026 20:45:00 +0000

Type Values Removed Values Added
First Time appeared Japan Computer Emergency Response Team Coordination Center (jpcert/cc)
Japan Computer Emergency Response Team Coordination Center (jpcert/cc) logontracer
Vendors & Products Japan Computer Emergency Response Team Coordination Center (jpcert/cc)
Japan Computer Emergency Response Team Coordination Center (jpcert/cc) logontracer

Mon, 27 Apr 2026 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

Mon, 27 Apr 2026 00:15:00 +0000

Type Values Removed Values Added
Description There is a cypher injection issue in LogonTracer prior to v2.0.0. If specially crafted Windows event log data is loaded, the contents of the database may be altered.
Weaknesses CWE-943
References
Metrics cvssV3_0

{'score': 4.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N'}

cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: jpcert

Published: 2026-04-27T00:04:23.709Z

Updated: 2026-04-27T15:23:56.804Z

Reserved: 2026-04-21T23:50:58.926Z

Link: CVE-2026-33566

cve-icon Vulnrichment

Updated: 2026-04-27T15:23:52.152Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-27T00:16:20.083

Modified: 2026-04-28T18:15:39.440

Link: CVE-2026-33566

cve-icon Redhat

No data.