CVE-2016-8733

Name: CVE-2016-8733
Creator: NVD / NIST
Published: 2016-12-14T17:59:00.22+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.55%

Last modified Jun 17, 2026

CVE-2016-8733 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. An exploitable integer overflow exists in the Joyent SmartOS 20161110T013148Z Hyprlofs file system. The vulnerability is present in the Ioctl system call with the command HYPRLOFS_ADD_ENTRIES when dealing with native file systems. EPSS estimates a 0.55% chance of exploitation in the next 30 days.

Description

An exploitable integer overflow exists in the Joyent SmartOS 20161110T013148Z Hyprlofs file system. The vulnerability is present in the Ioctl system call with the command HYPRLOFS_ADD_ENTRIES when dealing with native file systems. An attacker can craft an input that can cause a kernel panic and potentially be leveraged into a full privilege escalation vulnerability. This vulnerability is distinct from CVE-2016-9031.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.55%

41.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-190

Affected Software

Vendor	Product	Versions
Joyent	Smartos	<= 20161110t013148z

References

http://www.securityfocus.com/bid/94920Broken Link, Third Party Advisory, VDB Entry
http://www.talosintelligence.com/reports/TALOS-2016-0248/Exploit, Third Party Advisory, VDB Entry
http://www.securityfocus.com/bid/94920Broken Link, Third Party Advisory, VDB Entry
http://www.talosintelligence.com/reports/TALOS-2016-0248/Exploit, Third Party Advisory, VDB Entry

Timeline

Published: Dec 14, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-8733?

How severe is CVE-2016-8733?

CVE-2016-8733 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.55% probability of exploitation in the next 30 days.

How do I fix CVE-2016-8733?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-8733?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST