CVE-2026-33277
Received Received - Intake
OS Command Injection in LogonTracer Allows Arbitrary Command Execution

Publication date: 2026-04-27

Last updated on: 2026-04-28

Assigner: JPCERT/CC

Description
An OS command Injection issue exists in LogonTracer prior to v2.0.0. An arbitrary OS command may be executed by a logged-in user.
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Meta Information
Published
2026-04-27
Last Modified
2026-04-28
Generated
2026-06-16
AI Q&A
2026-04-27
EPSS Evaluated
2026-06-15
NVD
CVE-2026-33277
EUVD
EUVD-2026-25741
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
jpcert logontracer to 2.0.0 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-78 The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
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Executive Summary

CVE-2026-33277 is an OS command injection vulnerability in LogonTracer versions prior to 2.0.0. This flaw allows a logged-in user with limited privileges to execute arbitrary operating system commands without requiring any user interaction.

LogonTracer is a tool used to analyze and visualize Windows event logs to investigate malicious logons. The vulnerability arises because the software does not properly restrict or sanitize input that can be used to inject OS commands.

Impact Analysis

This vulnerability can have serious impacts as it allows an attacker with limited privileges to execute arbitrary OS commands on the system running LogonTracer.

  • Potential unauthorized access or control over the system.
  • Compromise of system integrity, confidentiality, and availability.
  • Possibility of further exploitation or lateral movement within the network.
Mitigation Strategies

The recommended immediate step to mitigate the CVE-2026-33277 vulnerability is to update LogonTracer to version 2.0.0 or later.

This update addresses the OS command injection vulnerability and other related security issues.

Compliance Impact

The provided information does not specify how the CVE-2026-33277 vulnerability affects compliance with common standards and regulations such as GDPR or HIPAA.

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