{"id":"DEBIAN-CVE-2026-91840","details":"A flaw was found in NetworkManager-vpnc. This vulnerability allows a local unprivileged user to escalate privileges to root. By injecting a newline character into the VPN username field, an attacker can manipulate the vpnc configuration to execute an arbitrary program with root privileges when the malicious VPN connection is activated.","modified":"2026-09-26T06:47:21.604855762Z","published":"2026-09-25T18:17:32.793Z","upstream":["CVE-2026-91840"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-91840"}],"affected":[{"package":{"name":"network-manager-vpnc","ecosystem":"Debian:12","purl":"pkg:deb/debian/network-manager-vpnc?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.8-4","1.2.8-5","1.2.8-6","1.2.8-7","1.2.8-8","1.4.0-1","1.4.0-2","1.4.0-3","1.4.0-4"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-91840.json"}},{"package":{"name":"network-manager-vpnc","ecosystem":"Debian:13","purl":"pkg:deb/debian/network-manager-vpnc?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.0-2","1.4.0-3","1.4.0-4"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-91840.json"}},{"package":{"name":"network-manager-vpnc","ecosystem":"Debian:14","purl":"pkg:deb/debian/network-manager-vpnc?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.0-2","1.4.0-3","1.4.0-4"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-91840.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}