Microsoft Windows 7 SP1/Vista SP2 Shell 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 Microsoft Windows 7 SP1/Vista SP2 (Operating System). This vulnerability affects some unknown processing of the component Shell. 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:

Use-after-free vulnerability in the Tablet Input Band in Windows Shell in Microsoft Windows Vista SP2 and Windows 7 SP1 allows remote attackers to execute arbitrary code via a crafted web site, aka "Microsoft Tablet Input Band Use After Free Vulnerability."

The weakness was shared 10/13/2015 by SuperHei with KnownSec as MS15-109 as confirmed bulletin (Technet). The advisory is shared for download at This vulnerability was named CVE-2015-2548 since 03/19/2015. The attack can be initiated remotely. No form of authentication is required for a successful 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 06/20/2022).

The vulnerability scanner Nessus provides a plugin with the ID 86366 (MS15-109: Security Update for Windows Shell to Address Remote Code Execution (3096443)), 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 91099 (Microsoft Windows Shell Remote Code Execution Vulnerabilities (MS15-109)).

Upgrading to version 8, 8.1 or 10 eliminates this vulnerability. Applying the patch MS15-109 is able to eliminate this problem. The bugfix is ready for download at The best possible mitigation is suggested to be patching the affected component. 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 21200.

The vulnerability is also documented in the databases at Tenable (86366), SecurityFocus (BID 76989†), SecurityTracker (ID 1033799†) and Vulnerability Center (SBV-53398†). Additional details are provided at








  • end of life (old version)

CPE 2.3info

CPE 2.2info


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


VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

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



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: 86366
Nessus Name: MS15-109: Security Update for Windows Shell to Address Remote Code Execution (3096443)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 802074
OpenVAS Name: MS Windows Shell and Tablet Input Band Remote Code Execution Vulnerabilities (3096443)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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


Recommended: Patch
Status: 🔍

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

Upgrade: Windows 8/8.1/10
Patch: MS15-109
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

Fortigate IPS: 🔍


03/19/2015 🔍
10/13/2015 +208 days 🔍
10/13/2015 +0 days 🔍
10/13/2015 +0 days 🔍
10/13/2015 +0 days 🔍
10/13/2015 +0 days 🔍
10/13/2015 +0 days 🔍
10/14/2015 +1 days 🔍
10/14/2015 +0 days 🔍
06/20/2022 +2441 days 🔍



Advisory: MS15-109
Researcher: SuperHei
Organization: KnownSec
Status: Confirmed

CVE: CVE-2015-2548 (🔍)
SecurityFocus: 76989 - Microsoft Windows Tablet Input Band CVE-2015-2548 Use After Free Remote Code Execution Vulnerability
SecurityTracker: 1033799
Vulnerability Center: 53398 - [MS15-109] Microsoft Windows Remote Code Execution due to an issue in Tablet Input Band - CVE-2015-2548, Critical

Misc.: 🔍


Created: 10/14/2015 10:34 AM
Updated: 06/20/2022 04:57 PM
Changes: 10/14/2015 10:34 AM (72), 02/13/2018 07:23 AM (17), 06/20/2022 04:57 PM (3)
Complete: 🔍
Cache ID: 44:79A:40


No comments yet. Languages: en.

Please log in to comment.

Might our Artificial Intelligence support you?

Check our Alexa App!