Is CVE-2013-5666 being actively exploited?

CVE-2013-5666 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2013-5666?

CVE-2013-5666 has a CVSS 2.0 base score of 4.7 (MEDIUM).

CVE-2013-5666

MEDIUM · CVSS 4.7EPSS 0.3%EU EUVD

The sendfile system-call implementation in sys/kern/uipc_syscalls.c in the kernel in FreeBSD 9.2-RC1 and 9.2-RC2 does not properly pad transmissions, which allows local users to obtain sensitive information (kernel memory) via a length greater than the length of the file.

Key facts

CVSS score: 4.7 (v2.0)
Severity: MEDIUM
CVSS vector: AV:L/AC:M/Au:N/C:C/I:N/A:N
Weakness (CWE): CWE-200
EPSS score: 0.3% (24th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2013-5505)
Published: September 23, 2013
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2013-5505 in the EU Vulnerability Database. Last updated in EUVD on September 16, 2024.

View on the EU Vulnerability Database

Affected products

freebsd / freebsd
freebsd / freebsd

References

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

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