What’s Vulnerable › Vulnerabilities

CVE-2002-0509

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2002-08-12 · updated 2026-06-16

Description

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.

Affected products

• Oracle9I: 9.0, 9.0.1

References

• http://online.securityfocus.com/archive/1/264697
• http://www.iss.net/security_center/static/8657.php
• http://www.securityfocus.com/bid/4391
• http://online.securityfocus.com/archive/1/264697
• http://www.iss.net/security_center/static/8657.php
• http://www.securityfocus.com/bid/4391

Get alerted when CVE-2002-0509 or the next vulnerability affects your stack