In FreeBSD before 11.1-STABLE(r332066) and 11.1-RELEASE-p10, due to insufficient initialization of memory copied to userland in the network…

published 2018-05-08 8y ago modified 2026-06-17 4mo ago also EUVD-2018-18665

cvss: 5.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 23%
public exploits: 0; none known

In FreeBSD before 11.1-STABLE(r332066) and 11.1-RELEASE-p10, due to insufficient initialization of memory copied to userland in the network subsystem, small amounts of kernel memory may be disclosed to userland processes. Unprivileged authenticated local users may be able to access small amounts of privileged kernel data.

Patch / fix

fixed in 1

freebsd freebsd 11.1

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Exploit prediction

0.31% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.0	5.5	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD	2.0	2.1	AV:L/AC:L/Au:N/C:P/I:N/A:N

Affected products

FreeBSD FreeBSD

Classification

Weakness

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

security.freebsd.org /advisories/FreeBSD-EN-18:05.mem.asc
vendor-advisory
securityfocus.com /bid/104118
vdb-entry, third-party-advisory

Sources

CVE List CVE-2018-6921
NVD CVE-2018-6921

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