{"id":"CVE-2026-91840","aliases":["DEBIAN-CVE-2026-91840","EUVD-2026-87250","GHSA-p2g6-ffcc-pqqv","UBUNTU-CVE-2026-91840"],"status":"published","title":"Networkmanager-vpnc: networkmanager-vpnc: local privilege escalation to root via newline injection in vpn username","description":"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.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00193,"percentile":0.09079,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-93"],"published":"2026-09-25T17:56:32Z","modified":"2026-10-17T13:01:17Z","affected":[{"source":"osv","ecosystem":"Debian:12","package":"network-manager-vpnc","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"]},{"source":"osv","ecosystem":"Debian:13","package":"network-manager-vpnc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.0-2","1.4.0-3","1.4.0-4"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"network-manager-vpnc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.10.0-1ubuntu1","1.0.8-1ubuntu1","1.1.93-1","1.1.93-1ubuntu0.1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"network-manager-vpnc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.4-4","1.2.4-6","1.2.4-6ubuntu0.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"network-manager-vpnc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.6-2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"network-manager-vpnc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.6-3","1.2.6-4","1.2.8-2"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"network-manager-vpnc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.8-5","1.2.8-7","1.2.8-7build1","1.2.8-7build2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"network-manager-vpnc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.0-3build1","1.4.0-4"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"network-manager-vpnc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.0-3","1.4.0-3build1"]}],"products":[{"vendor":"[unknown]","product":"networkmanager-vpnc"},{"vendor":"gnome","product":"networkmanager-vpnc"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-91840","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2533642","tags":["issue-tracking","x_refsource_REDHAT"]},{"url":"https://gitlab.gnome.org/Archive/NetworkManager-vpnc/-/work_items/19","tags":["report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91840"},{"url":"https://github.com/advisories/GHSA-p2g6-ffcc-pqqv"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-91840","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-91840","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-91840","tags":["report"]},{"url":"https://blogs.gnome.org/mcatanzaro/2026/09/15/privilege-escalation-vulnerabilities-in-networkmanager-plugins/","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-91840","title":"Networkmanager-vpnc: networkmanager-vpnc: local privilege escalation to root via newline injection in vpn username","description":"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.","status":"published","published":"2026-09-25T17:56:32.736Z","modified":"2026-09-28T12:44:17.583Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-93"],"updated_at":"2026-11-02T14:19:53.115938Z"}],"euvd":[{"id":"EUVD-2026-87250","description":"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.","status":"published","published":"2026-09-25T17:56:32Z","modified":"2026-09-28T12:44:17Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T17:27:53.908541Z"}],"ghsa":[{"id":"GHSA-p2g6-ffcc-pqqv","title":"A flaw was found in NetworkManager-vpnc. This vulnerability allows a local unprivileged user to...","description":"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.","status":"published","published":"2026-09-25T18:31:29Z","modified":"2026-09-25T18:31:36Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-93"],"updated_at":"2026-11-02T15:12:27.190195Z"}],"nvd":[{"id":"CVE-2026-91840","description":"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.","status":"published","published":"2026-09-25T18:17:32.793Z","modified":"2026-09-30T19:57:08.043Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-93"],"updated_at":"2026-11-02T14:12:51.721923Z"}],"osv":[{"id":"DEBIAN-CVE-2026-91840","description":"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.","status":"published","published":"2026-09-25T18:17:32.793Z","modified":"2026-10-16T18:00:06.850592068Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:46:06.410207Z"},{"id":"UBUNTU-CVE-2026-91840","description":"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.","status":"published","published":"2026-09-25T18:17:00Z","modified":"2026-10-17T13:01:17.339945222Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T16:57:40.980117Z"}]}}