Key Findings Critical remote code execution vulnerability CVE-2025-0520 in ShowDoc is under active exploitation in the wild with a CVSS score of 9.4 Unrestricted file upload flaw allows unauthenticated attackers to deploy web shells and execute arbitrary code on vulnerable servers Vulnerability affects all ShowDoc versions prior to 2.8.7, which was released in October 2020 Over 2,000 exposed ShowDoc instances remain online, with the majority located in China Threat actors hav