Google Chrome up to 50 Garbage Collection use after free

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.

A vulnerability classified as critical was found in Google Chrome up to 50 (Web Browser). This vulnerability affects an unknown functionality of the file extensions/renderer/ of the component Garbage Collection Handler. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

extensions/renderer/ in Google Chrome before 50.0.2661.94 does not prevent fallback execution once the Garbage Collection callback has started, which allows remote attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact via unknown vectors.

The weakness was disclosed 05/14/2016 by Atte Kettunen with OUSPG (Website). The advisory is available at This vulnerability was named CVE-2016-1662 since 01/12/2016. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 08/19/2022). It is expected to see the exploit prices for this product increasing in the near future.

The vulnerability scanner Nessus provides a plugin with the ID 90795 (Google Chrome < 50.0.2661.94 Multiple Vulnerabilities (Mac OS X)), 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 l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 175732 (Debian Security Update for chromium-browser (DSA 3564-1)).

Upgrading to version 50.0.2661.94 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 (90795) and SecurityFocus (BID 89106†).







CPE 2.3info

CPE 2.2info


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


VulDB Meta Base Score: 9.3
VulDB Meta Temp Score: 9.1

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍



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

NVD Base Score: 🔍


Class: Use after free
CWE: CWE-416 / CWE-119

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 90795
Nessus Name: Google Chrome < 50.0.2661.94 Multiple Vulnerabilities (Mac OS X)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 835123
OpenVAS Name: Google Chrome Security Updates(stable-channel-update_28-2016-04)-Linux
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Chrome 50.0.2661.94


01/12/2016 🔍
04/28/2016 +107 days 🔍
04/28/2016 +0 days 🔍
04/29/2016 +1 days 🔍
05/14/2016 +15 days 🔍
05/14/2016 +0 days 🔍
05/16/2016 +2 days 🔍
08/19/2022 +2286 days 🔍



Advisory: RHSA-2016:0707
Researcher: Atte Kettunen
Organization: OUSPG
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-1662 (🔍)

SecurityFocus: 89106 - Google Chrome Prior to 50.0.2661.94 Multiple Security Vulnerabilities


Created: 05/16/2016 09:39 AM
Updated: 08/19/2022 11:43 AM
Changes: 05/16/2016 09:39 AM (68), 11/26/2018 10:10 AM (16), 08/19/2022 11:43 AM (3)
Complete: 🔍
Cache ID: 44:BCF:40


No comments yet. Languages: en.

Please log in to comment.

Do you want to use VulDB in your project?

Use the official API to access entries easily!