{"schema":"threatline.record/2","record":{"id":"CVE-2026-107613","aliases":[],"summary":"NULL pointer dereference in TightVNC Server Win8ScreenDriver after failed DXGI re-initialization","details":"A NULL pointer dereference vulnerability in the Win8ScreenDriver component of GlavSoft TightVNC Server for Windows before 2.8.88 allows an attacker to crash the server, causing a denial of service. When re-initialization of the DXGI Desktop Duplication driver fails in applyNewScreenProperties() (for example after a GPU reset, display hot-plug or session change), m_drvImpl is left NULL and is subsequently dereferenced without a check by executeDetection(), getScreenBuffer(), grabFb(), getScreenPropertiesChanged() and getCursorPosition().","categories":["Unclassified"],"product":"TightVNC","vendor":"GlavSoft","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-107613","source_modified_at":"2026-10-08T14:01:33.803Z","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-2026-107613","source_modified_at":"2026-10-08T14:01:33.803Z","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":5.9,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00308,"percentile":0.22423,"score_date":"2026-10-23"},"published_at":"2026-10-08T13:39:56.972Z","modified_at":"2026-10-08T14:01:33.803Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-107613","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-08T14:01:33.803Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-107613","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/1660/","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":"partial","assessed_at":"2026-10-08T14:01:21.134363Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-08T14:01:33.803Z","content_hash":"00ad716b5289c70ead62726ae7b150f059ab9e5aa136326e24154ab30a777886"}}