CVE-2017-7393

CVE-2017-7393 describes a double free vulnerability in TigerVNC version 1.7.1, specifically within the VNCSConnectionST::fence function, affecting both tigervnc and tigervnc products. This flaw allows an authenticated client to trigger a denial of service or potentially achieve arbitrary code execution. Rated with a CVSS score of 8.8 (HIGH), the vulnerability is network-exploitable with low attack complexity and requires low privileges, posing high impacts to confidentiality, integrity, and availability. There is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit, Nuclei, or ExploitDB, and it has garnered minimal community discussion or media coverage.