CVE Catalog

CVE-2026-91839

HighCVSS 7.8
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.20%

9th percentile - higher than 9% of all known CVEs

Summary

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.

Risk Assessment

A local unprivileged user can gain full root privileges, leading to complete system compromise. This poses a serious threat to workstations and servers with the plugin installed.

Recommendation

Update NetworkManager-fortisslvpn to a version containing the fix. Until patched, restrict local access to trusted users and monitor for unusual VPN connection activations.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS