CVE-2013-1321: Microsoft Publisher 2003 SP3 does not properly check the data type of an unspecified return value, which al...

Security readout for executives and security teams

CVE-2013-1321 is a Microsoft Publisher 2003 SP3 flaw that can let an attacker run code if a user opens a specially crafted Publisher file. The business risk is highest where old Office components remain installed and users receive Publisher files from email, websites, or shared drives. Exposure is likely limited to systems with Microsoft Publisher 2003 SP3 installed and able to open Publisher files. Environments without Publisher 2003 SP3, or where Publisher files are blocked, have materially lower exposure based on the supplied evidence. Prioritize remediation if legacy Publisher 2003 SP3 exists on user workstations. This is older software, but the impact is code execution from a malicious document, which can become an initial access path if users handle Publisher files. Mitigation focus: Apply the Microsoft security update referenced in MS13-042 where applicable.; Check Microsoft MS13-042 for exact update packages and deployment guidance.; Restrict opening Publisher files from untrusted sources until affected systems are remediated..

Prepared

Jun 14, 2026, 22:07 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.