Is CVE-2007-5939 being actively exploited?

CVE-2007-5939 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2007-5939?

CVE-2007-5939 has a CVSS 2.0 base score of 10.0 (HIGH).

CVE-2007-5939

HIGH · CVSS 10.0EPSS 3.8%EU EUVD

The gss_userok function in appl/ftp/ftpd/gss_userok.c in Heimdal 0.7.2 does not allocate memory for the ticketfile pointer before calling free, which allows remote attackers to have an unknown impact via an invalid username. NOTE: the vulnerability was originally reported for ftpd.c, but this is incorrect.

Key facts

CVSS score: 10.0 (v2.0)
Severity: HIGH
CVSS vector: AV:N/AC:L/Au:N/C:C/I:C/A:C
Weakness (CWE): CWE-119
EPSS score: 3.8% (90th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2007-5909)
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-2007-5909 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

heimdal / heimdal

References

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

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