CVE-2026-91840 — Networkmanager-vpnc: networkmanager-vpnc: local privilege escalation to root via newline injection in vpn username
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 userna…
Published: 2026-09-25 · CVSS: 7.8 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7