CVE-2026-25880 Untrusted Search Path in SumatraPDF Reader (explorer.exe on Windows)

SumatraPDF is a multi-format reader for Windows. In 3.5.2 and earlier, the PDF reader allows execution of a malicious binary explorer.exe located in the same directory as the opened PDF when the user clicks File → “Show in folder”. This behavior leads to arbitrary code execution on the victim’s...