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.

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.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Japan Computer Emergency Response Team Coordination Center (JPCERT/CC) LogonTracer affected
Version Status Constraints
prior to v2.0.0 affected —

No data.

No data.

No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

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

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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: jpcert

Published:

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

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

Link: CVE-2026-33566

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

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

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

Link: CVE-2026-33566

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses