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.
Published: 2026-04-27
Score: 8.7 High
EPSS: < 1% Very Low
KEV: No
Impact: Command Execution
Action: Apply Patch
AI Analysis

Impact

An OS command injection vulnerability exists in LogonTracer before version 2.0.0, allowing any logged‑in user to execute arbitrary operating‑system commands. This flaw, catalogued as CWE‑78, gives an attacker the potential to compromise system confidentiality, integrity, and availability at the level of the authenticated user.

Affected Systems

Any deployment of LogonTracer that is not updated to version 2.0.0 or newer is affected. This includes all versions prior to 2.0.0 as identified by JPCERT/CC.

Risk and Exploitability

The CVSS score of 8.7 marks this vulnerability as high severity. The EPSS score is reported as less than 1%, indicating low current exploitation probability, and it is not listed in the CISA KEV catalog. The weakness can be exploited by a logged‑in user; no remote exploitation path is documented in the description.

Generated by OpenCVE AI on April 28, 2026 at 04:57 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade LogonTracer to version 2.0.0 or newer as released by the vendor.
  • Restrict LogonTracer access to only trusted users and limit roles that can log in if an immediate upgrade is not feasible.
  • Monitor system logs for anomalous command execution and audit logged user activity for signs of abuse.

Generated by OpenCVE AI on April 28, 2026 at 04:57 UTC.

Tracking

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Advisories

No advisories yet.

History

Tue, 28 Apr 2026 18:45:00 +0000

Type Values Removed Values Added
First Time appeared Jpcert
Jpcert logontracer
CPEs cpe:2.3:a:jpcert:logontracer:*:*:*:*:*:*:*:*
Vendors & Products Jpcert
Jpcert logontracer

Tue, 28 Apr 2026 05:15:00 +0000

Type Values Removed Values Added
Title OS Command Injection in LogonTracer Prior to v2.0.0 Allows Arbitrary Command Execution by Authenticated User

Mon, 27 Apr 2026 20:45:00 +0000

Type Values Removed Values Added
First Time appeared Japan Computer Emergency Response Team Coordination Center (jpcert/cc)
Japan Computer Emergency Response Team Coordination Center (jpcert/cc) logontracer
Vendors & Products Japan Computer Emergency Response Team Coordination Center (jpcert/cc)
Japan Computer Emergency Response Team Coordination Center (jpcert/cc) logontracer

Mon, 27 Apr 2026 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Mon, 27 Apr 2026 00:15:00 +0000

Type Values Removed Values Added
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.
Weaknesses CWE-78
References
Metrics cvssV3_0

{'score': 8.8, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

Japan Computer Emergency Response Team Coordination Center (jpcert/cc) Logontracer
Jpcert Logontracer
cve-icon MITRE

Status: PUBLISHED

Assigner: jpcert

Published:

Updated: 2026-04-27T15:32:02.563Z

Reserved: 2026-04-21T23:51:22.704Z

Link: CVE-2026-33277

cve-icon Vulnrichment

Updated: 2026-04-27T15:31:58.190Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-27T00:16:19.483

Modified: 2026-04-28T18:43:10.593

Link: CVE-2026-33277

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-28T05:00:14Z

Weaknesses