Apple iOS up to 10.1.1 WebKit memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability was found in Apple iOS up to 10.1.1 (Smartphone Operating System) and classified as critical. Affected by this issue is some unknown functionality of the component WebKit. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product 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. Impacted is confidentiality, integrity, and availability.

The bug was discovered 12/14/2016. The weakness was presented 12/13/2016 by Boris Zbarsky with Zero Day Initiative as HT207422 as confirmed advisory (Website). The advisory is shared for download at This vulnerability is handled as CVE-2016-7640 since 09/09/2016. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 10/06/2022). It is expected to see the exploit prices for this product increasing in the near future. The advisory points out:

Multiple memory corruption issues were addressed through improved state management.

The vulnerability scanner Nessus provides a plugin with the ID 95825 (Apple iTunes < 12.5.4 Multiple Vulnerabilities (uncredentialed check)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Peer-To-Peer File Sharing and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370265 (Apple iTunes Prior to 12.5.4 Multiple Vulnerabilities (HT207427)).

Upgrading to version 10.2 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (95825) and SecurityFocus (BID 94907†).







CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔍
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VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
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VulDB Base Score: 🔍
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Class: Memory corruption
CWE: CWE-119

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

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Current Price Estimation: 🔍


Nessus ID: 95825
Nessus Name: Apple iTunes < 12.5.4 Multiple Vulnerabilities (uncredentialed check)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802225
OpenVAS Name: Apple iCloud Multiple Vulnerabilities Feb17 (Windows)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: iOS 10.2


09/09/2016 🔍
12/12/2016 +94 days 🔍
12/13/2016 +1 days 🔍
12/13/2016 +0 days 🔍
12/14/2016 +1 days 🔍
12/14/2016 +0 days 🔍
12/14/2016 +0 days 🔍
02/20/2017 +68 days 🔍
10/06/2022 +2054 days 🔍



Advisory: HT207422
Researcher: Boris Zbarsky
Organization: Zero Day Initiative
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-7640 (🔍)
SecurityFocus: 94907 - Apple Safari/Cloud/iTunes/iOS/tvOS Multiple Security Vulnerabilities
SecurityTracker: 1037459

scip Labs:


Created: 12/14/2016 11:54 AM
Updated: 10/06/2022 10:11 AM
Changes: 12/14/2016 11:54 AM (67), 07/06/2019 06:10 AM (18), 10/06/2022 10:11 AM (4)
Complete: 🔍
Cache ID: 44:34D:40


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