Microsoft Internet Explorer 8/9/10/11 VBscript/JScript Engine 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 was found in Microsoft Internet Explorer 8/9/10/11 (Web Browser) and classified as critical. Affected by this issue is some unknown functionality of the component VBscript/JScript Engine. 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.

The issue has been introduced in 03/05/2008. The weakness was presented 05/12/2015 as MS15-043 as confirmed bulletin (Technet). The advisory is shared for download at This vulnerability is handled as CVE-2015-1686 since 02/17/2015. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1592.

The vulnerability was handled as a non-public zero-day exploit for at least 2624 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 83358 (MS15-043: Cumulative Security Update for Internet Explorer (3049563)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins. The commercial vulnerability scanner Qualys is able to test this issue with plugin 100232 (Microsoft Internet Explorer Cumulative Security Update (MS15-043)).

Applying the patch MS15-043 is able to eliminate this problem. The bugfix is ready for download at A possible mitigation has been published immediately after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 19824.

The vulnerability is also documented in the databases at Tenable (83358), SecurityFocus (BID 74530†), SecurityTracker (ID 1032282†) and Vulnerability Center (SBV-50012†). is providing further details.








CPE 2.3info

CPE 2.2info


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VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
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Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Nessus ID: 83358
Nessus Name: MS15-043: Cumulative Security Update for Internet Explorer (3049563)
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Threat Intelligenceinfo

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Recommended: Patch
Status: 🔍

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Patch: MS15-043
TippingPoint: 🔍
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03/05/2008 🔍
02/17/2015 +2540 days 🔍
05/12/2015 +84 days 🔍
05/12/2015 +0 days 🔍
05/12/2015 +0 days 🔍
05/12/2015 +0 days 🔍
05/12/2015 +0 days 🔍
05/13/2015 +1 days 🔍
05/13/2015 +0 days 🔍
05/13/2015 +0 days 🔍
05/11/2022 +2555 days 🔍



Advisory: MS15-043
Status: Confirmed

CVE: CVE-2015-1686 (🔍)

SecurityFocus: 74530 - Microsoft VBScript and JScript CVE-2015-1686 ASLR Security Bypass Vulnerability
SecurityTracker: 1032282 - Microsoft Internet Explorer Multiple Bugs Let Remote Users Bypass ASLR and Execute Arbitrary Code
Vulnerability Center: 50012 - [MS15-043, MS15-053] Microsoft Internet Explorer 8-11 Remote VBScript and JScript ASLR Bypass, Medium

Misc.: 🔍


Created: 05/13/2015 11:37 AM
Updated: 05/11/2022 08:35 AM
Changes: 05/13/2015 11:37 AM (74), 04/07/2017 12:13 PM (8), 05/11/2022 08:34 AM (3), 05/11/2022 08:35 AM (1)
Complete: 🔍
Cache ID: 3:29D:40


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