CVE-2026-33566 — MEDIUM (4.3)

Q: What is CVE-2026-33566?

CVE-2026-33566 is a vulnerability with a CVSS score of 4.3 (MEDIUM). 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.

Q: How severe is CVE-2026-33566?

CVE-2026-33566 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-33566?

Check the references section above for vendor advisories and patch information. Affected products include: Jpcert Logontracer.

Vulnerability 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.

CVSS Score

4.3

MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

NONE

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Jpcert	Logontracer	< 2.0.0

Related Weaknesses (CWE)

CWE-943

References

https://jvn.jp/en/jp/JVN57877356/Third Party Advisory
https://www.jpcert.or.jp/press/2026/PR20260423.htmlThird Party Advisory

FAQ

What is CVE-2026-33566?

CVE-2026-33566 is a vulnerability with a CVSS score of 4.3 (MEDIUM). 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.

How severe is CVE-2026-33566?

CVE-2026-33566 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-33566?

Check the references section above for vendor advisories and patch information. Affected products include: Jpcert Logontracer.