{"schema":"threatline.record/2","record":{"id":"CVE-2026-107615","aliases":[],"summary":"DLL search order hijacking via screenhooks libraries in TightVNC Server","details":"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 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).","categories":["Unclassified"],"product":"TightVNC","vendor":"GlavSoft","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-107615","source_modified_at":"2026-10-08T14:00:27.042Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"TightVNC","vendor":"GlavSoft","versions":[{"version":"0","lessThan":"2.8.88","status":"affected","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-107615","source_modified_at":"2026-10-08T14:00:27.042Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"TightVNC","ecosystem":null},"version":"2.8.88","basis":"first unaffected version stated in the CVE record"}],"cvss":7.8,"severity":"High","kev":{"listed":false},"epss":{"probability":0.0014,"percentile":0.03033,"score_date":"2026-10-23"},"published_at":"2026-10-08T13:39:59.358Z","modified_at":"2026-10-08T14:00:27.042Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-107615","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-08T14:00:27.042Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-107615","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://sourceforge.net/p/vnc-tight/bugs/1666/","tags":["issue-tracking"]},{"source":"CVE List","url":"https://www.tightvnc.com/whatsnew.php","tags":["release-notes","patch"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"total","assessed_at":"2026-10-08T14:00:03.531511Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-08T14:00:27.042Z","content_hash":"5321aef04321416d89ceeb5c5c100127bae59a08c28502bd95db2f995dd6ee06"}}