CVE catalog
CVE-2009-0033
tomcat5.5 - several
- Severity
- Unknown
- Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 10.05% · Oct 25, 2026
Apache Tomcat 4.1.0 through 4.1.39, 5.5.0 through 5.5.27, and 6.0.0 through 6.0.18, when the Java AJP connector and mod_jk load balancing are used, allows remote attackers to cause a denial of service (application outage) via a crafted request with invalid headers, related to temporary blocking of connectors that have encountered errors, as demonstrated by an error involving a malformed HTTP Host header. tomcat6 Denial-Of-Service with AJP connection The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | tomcat5.5 | 5.0 | 5.5.26-5 | vulnerable |
| Debian | tomcat5.5 | 5.0 | 5.5.26-5lenny2 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | tomcat5.5 | deb | 5.0 | 5.5.26-5lenny2 | Not reported | DSA-2207-1 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed: