Is CVE-2007-6263 in the CISA KEV catalog?

No. CVE-2007-6263 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2007-6263?

CVE-2007-6263 has a CVSS v2 base score of 9.3 (HIGH).

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

CVE-2007-6263 has an EPSS score of 2.48% (83th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2007-6263?

Upgrade linux-ftpd-ssl on debian 11 to 0.17.18+0.3-9.1 or later.

CVE & CISA-KEV Catalog

CVE-2007-6263

HIGHEPSS 83th pctl

9.3

CVSS v2

NVD

Description

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.

CWE-20Improper Input Validation

How to fix

Remediation Available

linux-ftpd-sslDebian

Fixed in:0.17.18+0.3-9.1CVE-2007-6263

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

2.48%probability of exploitation in 30 days

83rdpercentile

Elevated risk: more likely to be exploited than 83% of all known CVEs.

References

Exploit1

bugs.gentoo.org

Other references5

Related Vulnerabilities

Other CWE-20 (Improper Input Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-3400	Critical	10.0	100%	KEV + Ransom	-
CVE-2021-45105	Medium	5.9	100%	-	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2018-7600	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-3452	High	7.5	100%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-23.