Executive brief
Microsoft Standard XPS is a document processing component used to handle and render XPS files in Windows environments. A heap-based buffer overflow vulnerability allows an authorized attacker to elevate their privileges on an affected system, potentially giving them administrative control and access to sensitive data.
Technical details
A heap-based buffer overflow exists in Microsoft Standard XPS, a Windows component responsible for parsing and processing XPS (XML Paper Specification) files. The vulnerability is triggered during the parsing of specially crafted XPS files and requires an attacker to be already authenticated with local access to the system. Successful exploitation allows privilege escalation from the current user context to a higher privilege level (such as SYSTEM). The attack is local in nature and does not require network access or user interaction beyond file handling. A patch is expected from Microsoft's security updates.
Affected products
- Microsoft Standard XPS
Timeline
- 2026-09-08: disclosed