{"id":"CVE-2026-107615","title":"An uncontrolled search path element vulnerability in GlavSoft TightVNC Server for Windows before 2.8.88 allows a local authenticated user to execute arbitrary code with SYSTEM privileges","summary":"An uncontrolled search path element vulnerability in GlavSoft TightVNC Server for Windows before 2.8.88 allows a local authenticated user to execute arbitrary code with SYSTEM privileges. DynamicLibrary::init() (and ThemeLib) load screen…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-427"],"vendor":"GlavSoft","product":"TightVNC","affected":["TightVNC < 2.8.88"],"published":"2026-10-08","updated":"2026-10-08","sourceUpdated":"2026-10-08T21:10:00.133","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-107615","references":[{"url":"https://sourceforge.net/p/vnc-tight/bugs/1666/","label":"33c584b5-0579-4c06-b2a0-8d8329fcab9c"},{"url":"https://www.tightvnc.com/whatsnew.php","label":"33c584b5-0579-4c06-b2a0-8d8329fcab9c"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-08T14:00:03.531511Z"},"ingestedAt":"2026-10-08T14:47:16.341Z","slug":"CVE-2026-107615","body":"## Overview\n\nAn uncontrolled search path element vulnerability in GlavSoft TightVNC Server for Windows before 2.8.88 allows a local authenticated user to execute arbitrary code with SYSTEM privileges. DynamicLibrary::init() (and ThemeLib) load screenhooks32.dll / screenhooks64.dll with LoadLibrary() using a bare file name and no LOAD_LIBRARY_SEARCH_* flags, so the TightVNC service follows the default DLL search order and loads an attacker-planted DLL from a writable directory earlier in that order (for example, an installation directory with permissive ACLs).\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}