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OpenAdvisories
High · 7.8 CVE-2026-91839 EUVD-2026-87249GHSA-vr82-qjvf-9rrq

Networkmanager-fortisslvpn: networkmanager-fortisslvpn: local privilege escalation to root via crlf injection in vpn profile credentials

Published Sep 25, 2026 · Updated Sep 28, 2026 · Assigned by fedora

Description

A flaw was found in NetworkManager-fortisslvpn, the FortiSSLVPN plugin for NetworkManager. The nm-fortisslvpn-service improperly handles carriage-return/line-feed (CR/LF) characters in VPN connection profile credentials. A local unprivileged user can exploit this by crafting a malicious VPN profile to inject additional configuration directives. This can lead to arbitrary code execution with root privileges when the crafted VPN connection is activated.

Affected products

VendorProductAffectedFixed
GNOME NetworkManager-fortisslvpn — —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 12 network-manager-fortisslvpn No fix yet —
ReleasePackageFixed inAdvisory
Ubuntu 24.04 LTS network-manager-fortisslvpn No fix yet —
Ubuntu 22.04 LTS network-manager-fortisslvpn No fix yet —
Ubuntu 20.04 LTS network-manager-fortisslvpn No fix yet —
Ubuntu 18.04 LTS network-manager-fortisslvpn No fix yet —

References