Is CVE-2007-6263 being actively exploited?

CVE-2007-6263 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2007-6263?

CVE-2007-6263 has a CVSS 2.0 base score of 9.3 (HIGH).

CVE-2007-6263

HIGH · CVSS 9.3EPSS 2.5%EU EUVD

The dataconn function in ftpd.c in netkit ftpd (netkit-ftpd) 0.17, when certain modifications to support SSL have been introduced, calls fclose on an uninitialized file stream, which allows remote attackers to cause a denial of service (daemon crash) and possibly have unspecified other impact via some types of FTP over SSL protocol behavior, as demonstrated by breaking a passive FTP DATA connection in a way that triggers an error in the server's SSL_accept function. NOTE: the netkit ftp issue is covered by CVE-2007-5769.

Key facts

CVSS score: 9.3 (v2.0)
Severity: HIGH
CVSS vector: AV:N/AC:M/Au:N/C:C/I:C/A:C
Weakness (CWE): CWE-20
EPSS score: 2.5% (85th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2007-6231)
Published: December 6, 2007
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2007-6231 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

netkit-ftp / netkit ftp

References

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

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