{"schema":"threatline.record/2","record":{"id":"CVE-2026-4869","aliases":[],"summary":"Potential Privilege Escalation in InstallShield","details":"A potential privilege escalation issue was identified in InstallShield version 2025 R2 and earlier when running compressed Basic MSI setup with Prerequisites from an insecure location. If a local administrator launches a compressed Setup.exe with Prerequisites from an unsecured location, the Prerequisite installers also might load from an unsecured location, potentially leading to privilege escalation.","categories":["Unclassified"],"product":"InstallShield","vendor":"Flexera","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-4869","source_modified_at":"2026-10-13T15:49:47.206Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"InstallShield","vendor":"Flexera","versions":[{"status":"affected","version":"0","lessThanOrEqual":"2025 R2","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":5.4,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00112,"percentile":0.01336,"score_date":"2026-10-23"},"published_at":"2026-10-13T14:10:11.962Z","modified_at":"2026-10-13T15:49:47.206Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-4869","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-13T15:49:47.206Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-4869","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://community.revenera.com/s/article/CVE-2026-4869-Potential-Privilege-Escalation-in-InstallShield-2025-R2-running-Setup-Prerequisites-from-an-insecure-directory"}],"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":"2026-10-13T14:52:25.727869Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-13T15:49:47.206Z","content_hash":"34faef846541e1f813e4c86cf87176bcb460bfb6ba91f781a8f7193745bcdb74"}}