Google Android up to 4.4.3/5.0.1/5.1.0 Telephony access control

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.9	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as critical has been found in Google Android up to 4.4.3/5.0.1/5.1.0. This issue affects some unknown processing of the component Telephony. Such manipulation leads to access control. This vulnerability is uniquely identified as CVE-2016-2423. The attack can be executed directly on the physical device. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Google Android up to 4.4.3/5.0.1/5.1.0 (Smartphone Operating System). It has been rated as critical. Affected by this issue is an unknown part of the component Telephony. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 04/04/2016 as ANDROID-26303187 as confirmed security bulletin (Website). The advisory is available at source.android.com. This vulnerability is handled as CVE-2016-2423 since 02/18/2016. Local access is required to approach this attack. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 264242 (Linux Distros Unpatched Vulnerability : CVE-2016-2423), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.4.4, 5.0.2, 5.1.1, 6.0 or 6.0.1 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 (264242) and Vulnerability Center (SBV-57916†). The entries VDB-81567, VDB-81568, VDB-81569 and VDB-81570 are pretty similar. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Smartphone Operating System

Vendor

• Google

Name

• Android

Version

• 1.0
• 1.1
• 1.5
• 1.6
• 2.0
• 2.0.1
• 2.1
• 2.2
• 2.2.1
• 2.2.2
• 2.2.3
• 2.3
• 2.3.1
• 2.3.2
• 2.3.3
• 2.3.4
• 2.3.5
• 2.3.6
• 2.3.7
• 3.0
• 3.1
• 3.2
• 3.2.1
• 3.2.2
• 3.2.3
• 3.2.4
• 3.2.5
• 3.2.6
• 4.0
• 4.0.1
• 4.0.2
• 4.0.3
• 4.0.4
• 4.1
• 4.1.1
• 4.1.2
• 4.2
• 4.2.1
• 4.2.2
• 4.3
• 4.3.1
• 4.4
• 4.4.1
• 4.4.2
• 4.4.3
• 4.4.4
• 5.0
• 5.0.1
• 5.1.0

License

• free

Website

• Vendor: https://www.google.com/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.1
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.1
VulDB Temp Score: 5.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 264242
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2016-2423

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Android 4.4.4/5.0.2/5.1.1/6.0/6.0.1

Timelineinfo

02/18/2016 🔍
04/04/2016 +46 days 🔍
04/04/2016 +0 days 🔍
04/05/2016 +1 days 🔍
04/05/2016 +0 days 🔍
04/17/2016 +11 days 🔍
09/13/2025 +3436 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: ANDROID-26303187
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-2423 (🔍)
GCVE (CVE): GCVE-0-2016-2423
GCVE (VulDB): GCVE-100-81602
Vulnerability Center: 57916 - Google Android Local Security Bypass and DoS in Telephony, Medium

scip Labs: https://www.scip.ch/en/?labs.20150917
See also: 🔍

Entryinfo

Created: 04/05/2016 09:13
Updated: 09/13/2025 22:57
Changes: 04/05/2016 09:13 (59), 02/03/2019 10:45 (10), 07/12/2022 08:59 (3), 09/13/2025 22:57 (16)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion

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