Home/CVE/There is a cypher injection issue in LogonTracer prior to v2.0.0. If specially crafted Windows event log data is loaded,
CVE

CVE-2026-33566

There is a cypher injection issue in LogonTracer prior to v2.0.0. If specially crafted Windows event log data is loaded,

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.

MEDIUM · CVSS 4.3 EPSS 0.00038
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-943Improper Neutralization of Special Elements in Data Query Logic
▤

Affected Products & Versions

1
jpcert logontracer< 2.0.0
▣

Scoring & Timeline

4.3
MEDIUM · CVSS v3.0 · vultures@jpcert.or.jp
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD27 Apr 2026 · 12:16 AM
CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://jvn.jp/en/jp/JVN57877356/Third Party Advisory
https://www.jpcert.or.jp/press/2026/PR20260423.htmlThird Party Advisory
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