TI-2026-25952 Aliases CVE-2026-33566 GHSA-vqg4-6jf2-58rx

There is a cypher injection issue in LogonTracer prior to v2.0.0.

LOW 22CWE-943Published 2026-04-27 · Updated 2026-04-27

Key facts

Attack vector: Network
Privileges required: None
User interaction: Active
Attack complexity: Low
Attack requirements: None
Impact type: —
Confidentiality · integrity · availability: None · Low · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00177 7th percentileScored 2026-11-07

Fix Fixed LogonTracer (Japan Computer Emergency Response Team Coordination Center (JPCERT/CC)): v2.0.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Japan Computer Emergency Response Team Coordination Center (JPCERT/CC)	LogonTracer	before v2.0.0	v2.0.0	Patch available	CNA

LogonTracer VendorJapan Computer Emergency Response Team Coordination Center (JPCERT/CC) Affected before v2.0.0 Fixed in v2.0.0 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:jpcert:logontracer::::::::	before 2.0.0	Vulnerable	Japan Computer Emergency Response Team Coordination Center (JPCERT/CC)

cpe:2.3:a:jpcert:logontracer:*:*:*:*:*:*:*:* Versions before 2.0.0 Vulnerable ·Japan Computer Emergency Response Team Coordination Center (JPCERT/CC)

Remediation

Fix · CNA LogonTracer (Japan Computer Emergency Response Team Coordination Center (JPCERT/CC)) Fixed in v2.0.0

Timeline

2026-10-02 Threatist record created from CVE-2026-33566
2026-10-03 Alias added: GHSA-vqg4-6jf2-58rx

References

Advisory 2

TI-2018-11564 LogonTracer 1.2.0 and earlier allows remote attackers to execute arbitrary OS commands via unspecified vectors. CVSS 3.0CRITICAL 9.8
TI-2018-11565 LogonTracer 1.2.0 and earlier allows remote attackers to conduct Python code injection attacks via unspecified vectors. CVSS 3.0CRITICAL 9.8
TI-2026-25689 OS command injection in Japan Computer Emergency Response Team Coordination Center… CVSS 4.0HIGH 8.7
TI-2018-11563 XML external entity injection in Japan Computer Emergency Response Team Coordination… CVSS 3.0HIGH 8.8
TI-2018-11562 Cross-site scripting in Japan Computer Emergency Response Team Coordination Center… CVSS 3.0MEDIUM 6.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences