GNOME Networkmanager

Local PrivEsc via Newline Injection in NetworkManagervpnc
CVE-2026-91841 7.8 - High - September 25, 2026

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.

CRLF Injection

NetworkManagervpnc Privilege Escalation via Username Injection
CVE-2026-91840 7.8 - High - September 25, 2026

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.

CRLF Injection

Local Privileged Escalation in NetworkManagerfortisslvpn via CR/LF Injection
CVE-2026-91839 7.8 - High - September 25, 2026

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.

CRLF Injection

Privilege Escalation via Unescaped Shell Metacharacters in NetworkManager-sstp
CVE-2026-91838 7.8 - High - September 25, 2026

A flaw was found in NetworkManager-sstp, the SSTP VPN plugin for NetworkManager. A local unprivileged user can exploit this vulnerability by embedding special characters, known as shell metacharacters, into VPN connection profile fields such as CA certificate or proxy settings. These unescaped characters are then processed by the `pppd` daemon, which runs with root privileges, allowing the attacker to execute arbitrary commands with elevated permissions when a malicious VPN connection is activated.

Shell injection

NetworkManager-iodine LPE via nameserver injection
CVE-2026-91837 7.8 - High - September 25, 2026

A flaw was found in NetworkManager-iodine, the iodine VPN plugin for NetworkManager. A local unprivileged user can exploit a vulnerability in how the 'nameserver' setting is processed when establishing an iodine VPN connection. By embedding shell metacharacters (special characters that can execute commands) in the 'nameserver' value, an attacker can inject and execute arbitrary commands. These commands run with root privileges before the application drops its elevated permissions, leading to local privilege escalation.

Shell injection

A flaw was found in NetworkManager in versions before 1.30.0
CVE-2021-20297 - May 26, 2021

A flaw was found in NetworkManager in versions before 1.30.0. Setting match.path and activating a profile crashes NetworkManager. The highest threat from this vulnerability is to system availability.

Improper Input Validation

It was found that nmcli
CVE-2020-10754 4.3 - Medium - June 08, 2020

It was found that nmcli, a command line interface to NetworkManager did not honour 802-1x.ca-path and 802-1x.phase2-ca-path settings, when creating a new profile. When a user connects to a network using this profile, the authentication does not happen and the connection is made insecurely.

authentification

NetworkManager 0.9 and earlier
CVE-2012-1096 - March 10, 2020

NetworkManager 0.9 and earlier allows local users to use other users' certificates or private keys when making a connection via the file path when adding a new connection.

GNOME NetworkManager version 1.10.2 and earlier contains a Information Exposure (CWE-200) vulnerability in DNS resolver
CVE-2018-1000135 7.5 - High - March 20, 2018

GNOME NetworkManager version 1.10.2 and earlier contains a Information Exposure (CWE-200) vulnerability in DNS resolver that can result in Private DNS queries leaked to local network's DNS servers, while on VPN. This vulnerability appears to have been fixed in Some Ubuntu 16.04 packages were fixed, but later updates removed the fix. cf. https://bugs.launchpad.net/ubuntu/+bug/1754671 an upstream fix does not appear to be available at this time.

Information Disclosure

GNOME NetworkManager
CVE-2015-0272 - November 17, 2015

GNOME NetworkManager allows remote attackers to cause a denial of service (IPv6 traffic disruption) via a crafted MTU value in an IPv6 Router Advertisement (RA) message, a different vulnerability than CVE-2015-8215.

The destroy_one_secret function in nm-setting-vpn.c in libnm-util in the NetworkManager package 0.8.999-3.git20110526 in Fedora 15 creates a log entry containing a certificate password, which
CVE-2011-1943 - June 14, 2011

The destroy_one_secret function in nm-setting-vpn.c in libnm-util in the NetworkManager package 0.8.999-3.git20110526 in Fedora 15 creates a log entry containing a certificate password, which allows local users to obtain sensitive information by reading a log file.

Format string vulnerability in the nm_info_handler function in Network Manager may
CVE-2005-2410 - August 01, 2005

Format string vulnerability in the nm_info_handler function in Network Manager may allow remote attackers to execute arbitrary code via format string specifiers in a Wireless Access Point identifier, which is not properly handled in a syslog call.