CVE-2011-0656

CVE-2011-0656 describes a critical remote code execution vulnerability affecting multiple versions of Microsoft PowerPoint, Office for Mac, and related products. The flaw stems from improper validation of PersistDirectoryEntry records within PowerPoint documents, allowing attackers to trigger memory corruption and execute arbitrary code or cause a denial of service. With a CVSS score of 9.3, this vulnerability is highly severe, requiring medium attack complexity but no authentication, and can lead to complete compromise of confidentiality, integrity, and availability. Despite its high severity and EPSS score, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.