Is CVE-2009-0362 being actively exploited?

CVE-2009-0362 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2009-0362?

CVE-2009-0362 has a CVSS 2.0 base score of 4.0 (MEDIUM).

CVE-2009-0362

MEDIUM · CVSS 4.0EPSS 1.3%EU EUVD

filter.d/wuftpd.conf in Fail2ban 0.8.3 uses an incorrect regular expression that allows remote attackers to cause a denial of service (forced authentication failures) via a crafted reverse-resolved DNS name (rhost) entry that contains a substring that is interpreted as an IP address, a different vulnerability than CVE-2007-4321.

Key facts

CVSS score: 4.0 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:L/Au:S/C:N/I:N/A:P
Weakness (CWE): CWE-287
EPSS score: 1.3% (71th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2009-0366)
Published: February 13, 2009
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2009-0366 in the EU Vulnerability Database. Last updated in EUVD on September 16, 2024.

View on the EU Vulnerability Database

Affected products

fail2ban / fail2ban

References

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=514163(Exploit)
http://secunia.com/advisories/33890(Vendor Advisory)
http://www.securityfocus.com/bid/33734

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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