What is CVE-2016-1882?

CVE-2016-1882 is a high-severity vulnerability in FreeBSD, classified under CWE-19. CVSS score: 7.5/10. Published 2016-01-29.

How severe is CVE-2016-1882?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in FreeBSD

CVE-2016-1882

FreeBSD 9.3 before p33, 10.1 before p26, and 10.2 before p9 allow remote attackers to cause a denial of service (kernel crash) via vectors related to creating a TCP connection with the TCP_MD5SIG and TCP_NOOPT socket options.

Published 2016-01-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.019 (79.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 79.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000

Affected products

FreeBSD — versions 9.3, 10.1, 10.2

Weakness classification (CWE)

CWE-19

References

www.securitytracker.com/id/1034677 (vdb-entry)
security.FreeBSD.org/advisories/FreeBSD-SA-16:05.tcp.asc (vendor-advisory, Patch)

Frequently asked questions

What is CVE-2016-1882?: CVE-2016-1882 is a high-severity vulnerability in FreeBSD, classified under CWE-19. CVSS score: 7.5/10. Published 2016-01-29.
How severe is CVE-2016-1882?: High severity. CVSS v3 base score is 7.5 out of 10.