MS05-003: Vulnerability in the Indexing Service Could Allow Remote Code Execution (871250)   11 Jan 2005 00:00 GMT
This update resolves a newly-discovered, privately reported vulnerability. The vulnerability is documented in the Vulnerability Details section of this bulletin. An attacker who successfully exploited this vulnerability could take complete control of an affected system. An attacker could install programs; view, change, or delete data; or create new accounts with full privileges. While remote code execution is possible, an attack would most likely result in a denial of service condition.
Source: TechNet

MS05-002: Vulnerability in Cursor and Icon Format Handling Could Allow Remote Code Execution (891711)   11 Jan 2005 00:00 GMT
This update resolves a newly-discovered, public vulnerability. The vulnerability is documented in the Vulnerability Details section of this bulletin. If a user is logged on with administrative privileges, an attacker who successfully exploited this vulnerability could take complete control of an affected system, including installing programs; viewing, changing, or deleting data; or creating new accounts with full privileges. Users whose accounts are configured to have fewer privileges on the system would be at less risk than users who operate with administrative privileges.
Source: TechNet

MS05-001: Vulnerability in HTML Help Could Allow Code Execution (890175)   11 Jan 2005 00:00 GMT
This update resolves a newly-discovered, publicly reported vulnerability. A vulnerability exists in the HTML Help ActiveX control in Windows that could allow information disclosure or remote code execution on an affected system. This vulnerability is documented in the Vulnerability Details section of this bulletin. If a user is logged on with administrative privileges, an attacker who successfully exploited this vulnerability could take complete control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full privileges. Users whose accounts are configured to have fewer privileges on the system could be less impacted than users who operate with administrative privileges.
Source: TechNet