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CVE-2016-10196

27
FAUCET Score

CVE-2016-10196 is a stack-based buffer overflow vulnerability in the libevent library, specifically within the evutil_parse_sockaddr_port function, affecting products like Debian and Mozilla. This vulnerability has a CVSS score of 7.5 (High) due to its network-based attack vector and low attack complexity, allowing unauthenticated attackers to cause a denial of service through a segmentation fault. Despite its high severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
<= 2.1.5CPE matchmatch criteria
cpe:2.3:a:libevent_project:libevent:*:*:*:*:*:*:*:*
< 45.9.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
< 53.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
52.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:52.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
5.21%
Probability of exploitation in next 30 days
EPSS Percentile
91.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0521 is in the 85th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (8)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:52.1.0-2.el6_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:52.1.0-1.el6_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: firefox-0:52.1.0-2.el7_3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: thunderbird-0:52.1.0-1.el7_3
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: libevent

Vendor Advisories (1)

redhatCVE-2016-10196Moderate

libevent: Stack-buffer overflow in evutil_parse_sockaddr_port()

Jan 27, 2016

References

access.redhat.com / errata/RHSA-2017:1104
Third Party Advisory
access.redhat.com / errata/RHSA-2017:1106
Third Party Advisory
access.redhat.com / errata/RHSA-2017:1201
Third Party Advisory
bugzilla.mozilla.org / show_bug.cgi
Issue TrackingThird Party Advisory
github.com / libevent/libevent/blob/release-2.1.6-beta/ChangeLog
Release NotesThird Party Advisory
github.com / libevent/libevent/commit/329acc18a0768c21ba22522f01a5c7f46cacc4d5
PatchThird Party Advisory
github.com / libevent/libevent/issues/318
ExploitIssue TrackingThird Party Advisory
security.gentoo.org / glsa/201705-01
Third Party Advisory
mozilla.org / security/advisories/mfsa2017-10
Third Party Advisory
mozilla.org / security/advisories/mfsa2017-11
Third Party Advisory
mozilla.org / security/advisories/mfsa2017-12
Third Party Advisory
mozilla.org / security/advisories/mfsa2017-13
Third Party Advisory
debian.org / security/2017/dsa-3789
Third Party Advisory
openwall.com / lists/oss-security/2017/01/31/17
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2017/02/02/7
Mailing ListThird Party Advisory
securityfocus.com / bid/96014
Third Party AdvisoryVDB Entry
securitytracker.com / id/1038320
Broken LinkThird Party AdvisoryVDB Entry