Microsoft Word up to 2003 backdoor

CVSS Meta Temp Score
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CTI Interest Score
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8.2$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Microsoft Word up to 2003. This impacts an unknown function. Performing a manipulation results in backdoor. This vulnerability was named CVE-2006-2492. In addition, an exploit is available. It is suggested to swap out the affected component for an alternative.

Detailsinfo

A vulnerability, which was classified as critical, was found in Microsoft Word up to 2003 (Word Processing Software). This affects some unknown processing. The manipulation with an unknown input leads to a backdoor vulnerability. CWE is classifying the issue as CWE-912. The product contains functionality that is not documented, not part of the specification, and not accessible through an interface or command sequence that is obvious to the product's users or administrators. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Buffer overflow in Microsoft Word in Office 2000 SP3, Office XP SP3, Office 2003 Sp1 and SP2, and Microsoft Works Suites through 2006, allows user-assisted attackers to execute arbitrary code via a malformed object pointer, as originally reported by ISC on 20060519 for a zero-day attack.

The weakness was presented 05/19/2006 by Shih-hao Weng with SANS (Website). The advisory is shared at isc.sans.org. This vulnerability is uniquely identified as CVE-2006-2492 since 05/19/2006. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but an exploit is available. MITRE ATT&CK project uses the attack technique T1588.001 for this issue.

The exploit is shared for download at immunitysec.com. It is declared as attacked. We expect the 0-day to have been worth approximately $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 21690 (MS06-027: Vulnerabilities in Microsoft Word Could Allow Remote Code Execution (917336)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 90312 (Vulnerability in Microsoft Word Could Allow Remote Code Execution (MS06-027)). The CISA Known Exploited Vulnerabilities Catalog lists this issue since 06/08/2022 with a due date of 06/22/2022:

Apply updates per vendor instructions.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at windowsupdate.microsoft.com. The problem might be mitigated by replacing the product with as an alternative. The best possible mitigation is suggested to be establishing an alternative product. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (26556), Zero-Day.cz (113), Tenable (21690), SecurityFocus (BID 18037†) and OSVDB (25635†). See VDB-82, VDB-332, VDB-333 and VDB-427 for similar entries. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 8.3
VulDB Meta Temp Score: 8.2

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

NVD Base Score: 8.8
NVD Vector: 🔍

ADP CISA Base Score: 8.8
ADP CISA Vector: 🔍

CVSSv2info

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Exploitinginfo

Class: Backdoor
CWE: CWE-912
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Attacked
Download: 🔍

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Nessus ID: 21690
Nessus Name: MS06-027: Vulnerabilities in Microsoft Word Could Allow Remote Code Execution (917336)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Zero-Day.cz: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Alternative
Status: 🔍

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Patch: windowsupdate.microsoft.com

Timelineinfo

05/19/2006 🔍
05/19/2006 +0 days 🔍
05/19/2006 +0 days 🔍
05/19/2006 +0 days 🔍
05/19/2006 +0 days 🔍
05/19/2006 +0 days 🔍
05/22/2006 +2 days 🔍
06/13/2006 +22 days 🔍
07/12/2006 +29 days 🔍
04/22/2026 +7224 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: isc.sans.org
Researcher: Shih-hao Weng
Organization: SANS
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2006-2492 (🔍)
GCVE (CVE): GCVE-0-2006-2492
GCVE (VulDB): GCVE-100-2253

OVAL: 🔍

CERT: 🔍
X-Force: 26556 - Microsoft Word document handling buffer overflow, High Risk
SecurityFocus: 18037 - Microsoft Word Malformed Object Pointer Remote Code Execution Vulnerability
Secunia: 20153 - Microsoft Word Malformed Object Pointer Vulnerability, Extremely Critical
OSVDB: 25635 - Microsoft Word Unspecified Code Execution
SecurityTracker: 1016130
Vupen: ADV-2006-1872

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 05/22/2006 12:05
Updated: 04/22/2026 02:35
Changes: 05/22/2006 12:05 (86), 04/27/2019 20:51 (5), 04/26/2024 18:13 (30), 06/28/2024 21:08 (12), 07/22/2024 05:29 (5), 09/09/2024 22:30 (1), 01/05/2025 03:29 (3), 06/22/2025 00:15 (3), 04/22/2026 02:35 (11)
Complete: 🔍
Cache ID: 216::103

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