What is CVE-2016-10196?

CVE-2016-10196 is a high-severity vulnerability in Libevent Project, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2017-03-15.

How severe is CVE-2016-10196?

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

Buffer overflow in Libevent Project

CVE-2016-10196

Stack-based buffer overflow in the evutil_parse_sockaddr_port function in evutil.c in libevent before 2.1.6-beta allows attackers to cause a denial of service (segmentation fault) via vectors involving a long string in brackets in the ip_as_string argument.

Vulnerability class: Buffer Overflow

Published 2017-03-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.052 (92.2th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 92.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.052 · newest: 0.052 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

www.securityfocus.com/bid/96014 (VDB Entry, Third Party Advisory, vdb-entry)
access.redhat.com/errata/RHSA-2017:1106 (vendor-advisory, Third Party Advisory)
www.mozilla.org/security/advisories/mfsa2017-12/ (Third Party Advisory)
www.debian.org/security/2017/dsa-3789 (vendor-advisory, Third Party Advisory)
www.openwall.com/lists/oss-security/2017/02/02/7 (mailing-list, Mailing List, Third Party Advisory)
www.mozilla.org/security/advisories/mfsa2017-11/ (Third Party Advisory)
security.gentoo.org/glsa/201705-01 (vendor-advisory, Third Party Advisory)
www.mozilla.org/security/advisories/mfsa2017-10/ (Third Party Advisory)
www.mozilla.org/security/advisories/mfsa2017-13/ (Third Party Advisory)
www.openwall.com/lists/oss-security/2017/01/31/17 (mailing-list, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2016-10196?: CVE-2016-10196 is a high-severity vulnerability in Libevent Project, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2017-03-15.
How severe is CVE-2016-10196?: High severity. CVSS v3 base score is 7.5 out of 10.