CVE-2013-7420

CVE-2013-7420 describes a buffer overflow vulnerability in Hancom Office 2010 SE, allowing remote attackers to execute arbitrary code. This critical flaw is triggered by a specially crafted HML file containing a long string within the Text attribute of a TEXTART XML element. With a CVSS score of 7.5, it carries a high severity due to its network-based attack vector, low attack complexity, and potential for partial confidentiality, integrity, and availability compromise. While not listed in CISA's KEV catalog, public exploit code exists on ExploitDB, though there is no evidence of active exploitation or significant community discussion.