CVE-2026-33277
OS Command Injection in LogonTracer Allows Arbitrary Command Execution
Publication date: 2026-04-27
Last updated on: 2026-04-28
Assigner: JPCERT/CC
Description
Description
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| jpcert | logontracer | to 2.0.0 (exc) |
Helpful Resources
Exploitability
| 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.
What immediate steps should I take to mitigate this vulnerability?
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.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
The provided information does not specify how the CVE-2026-33277 vulnerability affects compliance with common standards and regulations such as GDPR or HIPAA.