CVE-2026-33566

MEDIUMNVD 4.34.3—

4.3

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.

CVSS v3: 4.3
EG Score: 4.3(high)
EPSS: 11.8%
KEV: Not listed

Published

April 27, 2026

Last Modified

April 28, 2026

References (2)

vultures@jpcerthttps://jvn.jp/en/jp/JVN57877356/
vultures@jpcerthttps://www.jpcert.or.jp/press/2026/PR20260423.html

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-943

Data Freshness Timeline

(refreshed 16× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-26 13:44 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-20 22:38 UTCepss_batch
2026-05-20 22:38 UTCepss_batch
2026-05-20 15:32 UTCEG score recompute
2026-05-20 15:32 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-33566?

CVE-2026-33566 is a medium vulnerability published on April 27, 2026. 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.

When was CVE-2026-33566 disclosed?

CVE-2026-33566 was first published in the National Vulnerability Database on April 27, 2026, with the most recent update on April 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-33566 actively exploited?

CVE-2026-33566 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 11.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-33566?

CVE-2026-33566 has a CVSS v3 base score of 4.3 (NVD).

How do I remediate CVE-2026-33566?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-33566, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2026-33566

📅 Published

🔄 Last Modified

🔗 References (2)