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.
History

Tue, 29 Sep 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Sun, 27 Sep 2026 12:15:00 +0000

Type Values Removed Values Added
First Time appeared Gnome
Gnome network Manager Vpnc
Vendors & Products Gnome
Gnome network Manager Vpnc

Fri, 25 Sep 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 25 Sep 2026 18:00:00 +0000

Type Values Removed Values Added
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.
Title Networkmanager-vpnc: networkmanager-vpnc: local privilege escalation to root via newline injection in vpn username
Weaknesses CWE-93
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: fedora

Published: 2026-09-25T17:56:32.736Z

Updated: 2026-09-28T12:44:17.583Z

Reserved: 2026-09-15T08:28:01.333Z

Link: CVE-2026-91840

cve-icon Vulnrichment

Updated: 2026-09-25T18:15:07.267Z

cve-icon NVD

Status : Deferred

Published: 2026-09-25T18:17:32.793

Modified: 2026-09-30T19:57:08.043

Link: CVE-2026-91840

cve-icon Redhat

No data.