CVE-2002-0509

NONECVSS 0.0

0.0

Transparent Network Substrate (TNS) Listener in Oracle 9i 9.0.1.1 allows remote attackers to cause a denial of service (CPU consumption) via a single malformed TCP packet to port 1521.

CVSS v3: —
EG Score: —
EPSS: 77.3%
KEV: Not listed

Published

August 12, 2002

Last Modified

April 16, 2026

References (6)

cve@mitrehttp://online.securityfocus.com/archive/1/264697
cve@mitrehttp://www.iss.net/security_center/static/8657.php
cve@mitrehttp://www.securityfocus.com/bid/4391
af854a3a-2127-422b-91ae-364da2661108http://online.securityfocus.com/archive/1/264697
af854a3a-2127-422b-91ae-364da2661108http://www.iss.net/security_center/static/8657.php
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/4391

Data Freshness Timeline

(refreshed 13× in last 7d / 19× 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.

2026-05-29 13:40 UTCepss_batch
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Frequently asked(4)

What is CVE-2002-0509?

CVE-2002-0509 is a none vulnerability published on August 12, 2002. Transparent Network Substrate (TNS) Listener in Oracle 9i 9.0.1.1 allows remote attackers to cause a denial of service (CPU consumption) via a single malformed TCP packet to port 1521.

When was CVE-2002-0509 disclosed?

CVE-2002-0509 was first published in the National Vulnerability Database on August 12, 2002, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2002-0509 actively exploited?

CVE-2002-0509 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 77.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2002-0509?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2002-0509, 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.

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CVE-2002-0509

📅 Published

🔄 Last Modified

🔗 References (6)