Apple Mac OS X up to 10.11.4 Kernel memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability has been found in Apple Mac OS X up to 10.11.4 (Operating System) and classified as critical. This vulnerability affects an unknown functionality of the component Kernel. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was released 05/16/2016 by Kostya Serebryany (Basti) with Nanyang Technological University as HT206567 as confirmed advisory (Website). The advisory is available at This vulnerability was named CVE-2016-1827 since 01/13/2016. Local access is required to approach this attack. The successful exploitation needs a single authentication. Technical details are unknown but a public exploit is available. The advisory points out:

Multiple memory corruption issues were addressed through improved memory handling.

A public exploit has been developed by Brandon Azad and been published 9 months after the advisory. It is possible to download the exploit at It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 91228 (Mac OS X 10.11.x < 10.11.5 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks and running in the context c.

Upgrading to version 10.11.5 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (91228) and Exploit-DB (44238). Entries connected to this vulnerability are available at 87425, 87434, 87435 and 87436.






  • commercial


  • end of life

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 8.3
VulDB Meta Temp Score: 7.9

VulDB Base Score: 8.8
VulDB Temp Score: 7.9
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NVD Base Score: 7.8
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Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Brandon Azad
Download: 🔍

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Nessus ID: 91228
Nessus Name: Mac OS X 10.11.x < 10.11.5 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
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OpenVAS ID: 881901
OpenVAS Name: Apple Mac OS X Multiple Vulnerabilities-01 November-2016
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Threat Intelligenceinfo

Interest: 🔍
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Recommended: Upgrade
Status: 🔍

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Upgrade: Mac OS X 10.11.5


01/13/2016 🔍
05/16/2016 +124 days 🔍
05/16/2016 +0 days 🔍
05/16/2016 +0 days 🔍
05/18/2016 +2 days 🔍
05/19/2016 +1 days 🔍
05/20/2016 +1 days 🔍
01/10/2017 +235 days 🔍
01/10/2017 +0 days 🔍
08/19/2022 +2047 days 🔍



Advisory: HT206567
Researcher: Kostya Serebryany (Basti)
Organization: Nanyang Technological University
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-1827 (🔍)
SecurityTracker: 1035890
SecurityFocus: 90691 - Apple Mac OS X/watchOS/iOS/tvOS Multiple Security Vulnerabilities

scip Labs:
See also: 🔍


Created: 05/18/2016 11:52 AM
Updated: 08/19/2022 08:29 PM
Changes: 05/18/2016 11:52 AM (78), 12/01/2018 11:42 PM (13), 08/19/2022 08:29 PM (5)
Complete: 🔍


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