{"id":"CVE-2026-4869","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-4869","generatedAt":"2026-10-27T23:56:42.038Z","title":"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.","description":"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.","published":"2026-10-13T15:17:44.000Z","lastModified":"2026-10-16T16:00:34.000Z","status":"Awaiting Analysis","sourceIdentifier":"PSIRT-CNA@flexerasoftware.com","cvss":{"version":"4.0","score":5.4,"severity":"MEDIUM","vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-426"],"affected":[],"epss":{"score":0.00112,"percentile":0.01388,"date":"2026-10-26","history":[{"date":"2026-10-14","score":0.00112,"percentile":0.0131}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.11%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-13T15:17:44.000Z","detail":{"score":"5.4","severity":"MEDIUM","publishedAt":"2026-10-13T15:17:44.480Z"},"summary":"New CVE, medium severity (CVSS 5.4)."}],"references":[{"url":"https://community.revenera.com/s/article/CVE-2026-4869-Potential-Privilege-Escalation-in-InstallShield-2025-R2-running-Setup-Prerequisites-from-an-insecure-directory","source":"PSIRT-CNA@flexerasoftware.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-4869","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}