Apple iOS up to 11.3.1 Siri Contacts information disclosure

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability, which was classified as critical, has been found in Apple iOS up to 11.3.1 (Smartphone Operating System). Affected by this issue is an unknown functionality of the component Siri Contacts. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in certain Apple products. iOS before 11.4 is affected. The issue involves the "Siri Contacts" component. It allows physically proximate attackers to discover private contact information via Siri.

The bug was discovered 05/29/2018. The weakness was shared 05/29/2018 as HT208848 as confirmed advisory (Website). The advisory is shared for download at This vulnerability is handled as CVE-2018-4244 since 01/02/2018. The exploitation is known to be easy. The attack needs to be approached locally. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1592. The advisory points out:

An issue existed with Siri permissions. This was addressed with improved permission checking.

Upgrading to version 11.4 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.







CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍


VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.6
NVD Vector: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍


Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfo

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


Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: iOS 11.4


01/02/2018 🔍
05/29/2018 +147 days 🔍
05/29/2018 +0 days 🔍
05/29/2018 +0 days 🔍
06/03/2018 +5 days 🔍
06/08/2018 +4 days 🔍
03/21/2023 +1747 days 🔍



Advisory: HT208848
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-4244 (🔍)
SecurityTracker: 1041031

scip Labs:


Created: 06/03/2018 02:55 PM
Updated: 03/21/2023 07:59 AM
Changes: 06/03/2018 02:55 PM (65), 02/13/2020 08:14 AM (3), 03/21/2023 07:59 AM (4)
Complete: 🔍
Cache ID: 34:7B6:40


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