{"id":"DEBIAN-CVE-2026-42171","details":"NSIS (Nullsoft Scriptable Install System) 3.06.1 before 3.12 sometimes uses the Low IL temp directory when executing as SYSTEM, allowing local attackers to gain privileges (if they can cause my_GetTempFileName to return 0, as shown in the references).","modified":"2026-09-14T17:03:12.085312549Z","published":"2026-04-24T22:16:01.540Z","upstream":["CVE-2026-42171"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-42171"}],"affected":[{"package":{"name":"nsis","ecosystem":"Debian:12","purl":"pkg:deb/debian/nsis?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.08-3","3.08-3+deb12u1","3.09-1","3.09-2","3.09-3","3.09-4","3.10-1","3.10-2","3.11-1","3.12-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42171.json"}},{"package":{"name":"nsis","ecosystem":"Debian:13","purl":"pkg:deb/debian/nsis?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.11-1","3.12-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42171.json"}},{"package":{"name":"nsis","ecosystem":"Debian:14","purl":"pkg:deb/debian/nsis?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.12-1"}]}],"versions":["3.11-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42171.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}