PL/SQL module 3.0.9.8.2 in Oracle 9i Application Server 1.0.2.x allows remote attackers to cause a denial of service (crash) via an HTTP Authorization header without an authentication type.
Conclusion & alert: CVE-2002-0566 is rated Moderate Risk (51.7/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.57%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 2.58% | 3.57% | +0.99% |
| 2 | 2026-02-03 | 1.55% | 2.58% | +1.03% |
| 3 | 2025-03-30 | — | 1.55% | — |
Full EPSS history (11 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| oracle | application_server | 1.0.2 | cpe:2.3:a:oracle:application_server:1.0.2:*:*:*:*:*:*:* |
| oracle | application_server_web_cache | 2.0.0.0 | cpe:2.3:a:oracle:application_server_web_cache:2.0.0.0:*:*:*:*:*:*:* |
| oracle | application_server_web_cache | 2.0.0.1 | cpe:2.3:a:oracle:application_server_web_cache:2.0.0.1:*:*:*:*:*:*:* |
| oracle | application_server_web_cache | 2.0.0.2 | cpe:2.3:a:oracle:application_server_web_cache:2.0.0.2:*:*:*:*:*:*:* |
| oracle | application_server_web_cache | 2.0.0.3 | cpe:2.3:a:oracle:application_server_web_cache:2.0.0.3:*:*:*:*:*:*:* |
| oracle | oracle8i | 8.1.7 | cpe:2.3:a:oracle:oracle8i:8.1.7:*:*:*:*:*:*:* |
| oracle | oracle8i | 8.1.7_.1 | cpe:2.3:a:oracle:oracle8i:8.1.7_.1:*:*:*:*:*:*:* |
| oracle | oracle9i | 9.0 | cpe:2.3:a:oracle:oracle9i:9.0:*:*:*:*:*:*:* |
| oracle | oracle9i | 9.0.1 | cpe:2.3:a:oracle:oracle9i:9.0.1:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://otn.oracle.com/deploy/security/pdf/ias_modplsql_alert.pdf | Patch Vendor Advisory |
| http://www.cert.org/advisories/CA-2002-08.html | Patch Third Party Advisory US Government Resource |
| http://www.kb.cert.org/vuls/id/805915 | US Government Resource |
| http://www.securityfocus.com/bid/4037 | Patch Vendor Advisory |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/8099 |