What’s Vulnerable › Vulnerabilities

CVE-2026-91839: Networkmanager-fortisslvpn: networkmanager-fortisslvpn: local privilege escalation to root via crlf injection in vpn profile credentials

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-25 · updated 2026-09-30
• Weakness: CWE-93

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

• GNOME NetworkManager-fortisslvpn: all versions

References

• https://access.redhat.com/security/cve/CVE-2026-91839
• https://bugzilla.redhat.com/show_bug.cgi?id=2533640
• https://gitlab.gnome.org/Archive/NetworkManager-fortisslvpn/-/work_items/80

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