The Catalina org.apache.catalina.connector.http package in Tomcat 4.0.x up to 4.0.3 allows remote attackers to cause a denial of service via several requests that do not follow the HTTP protocol, which causes Tomcat to reject later requests.
Published 2003-11-17 05:00:00
Updated 2019-03-25 11:29:03
Source MITRE
View at NVD,
Vulnerability category: Denial of service

Threat overview for CVE-2003-0866

Top countries where our scanners detected CVE-2003-0866
Top open port discovered on systems with this issue 80
IPs affected by CVE-2003-0866 320
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2003-0866!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2003-0866

Probability of exploitation activity in the next 30 days EPSS Score History
~ 75 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2003-0866

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen

References for CVE-2003-0866

Products affected by CVE-2003-0866

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