ChangeIntel IT change radar

Public mode

No access to your tenant or devices. Every item links to its source. What this means

CVE-2026-91840

NetworkManager-vpnc · privilege escalation

CVSS 3.1 7.8 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory.

cve-program · CVE-2026-91840

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-91840

Published

network-manager-vpnc

https://gitlab.gnome.org/GNOME/NetworkManager-vpnc

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "GNOME",
                    "product": "NetworkManager-vpnc",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "0",
                            "lessThan": "*",
                            "versionType": "semver"
                        }
                    ],
                    "packageName": "network-manager-vpnc",
                    "collectionURL": "https://gitlab.gnome.org/GNOME/NetworkManager-vpnc",
                    "defaultStatus": "unaffected"
                }

Original source record · Cite this exact observation · Complete original publisher JSON