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High · 7.8 CVE-2026-91841 EUVD-2026-87251GHSA-w3p6-vc7r-vcv4

Networkmanager-vpnc: networkmanager-vpnc: incomplete fix for cve-2018-10900 allows root privilege escalation via ca-file path newline injection

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

Description

A flaw was found in NetworkManager-vpnc, a VPN plugin for NetworkManager. A local unprivileged user can exploit this vulnerability by injecting a newline character into the CA-File path. This manipulation allows the user to execute arbitrary commands as the root user, leading to local privilege escalation.

Affected products

VendorProductAffectedFixed
GNOME NetworkManager-vpnc — —

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 13 network-manager-vpnc No fix yet —
Debian 12 network-manager-vpnc No fix yet —
ReleasePackageFixed inAdvisory
Ubuntu 26.10 network-manager-vpnc No fix yet —
Ubuntu 26.04 LTS network-manager-vpnc No fix yet —
Ubuntu 24.04 LTS network-manager-vpnc No fix yet —
Ubuntu 22.04 LTS network-manager-vpnc No fix yet —
Ubuntu 20.04 LTS network-manager-vpnc No fix yet —
Show 2 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 18.04 LTS network-manager-vpnc No fix yet —
Ubuntu 16.04 LTS network-manager-vpnc No fix yet —

References