CVE-2026-91839

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.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
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

Configurations

No configuration.

History

28 Sep 2026, 13:17

Type	Values Removed	Values Added
References	~~() https://gitlab.gnome.org/Archive/NetworkManager-fortisslvpn/-/work_items/80 -~~	() https://gitlab.gnome.org/Archive/NetworkManager-fortisslvpn/-/work_items/80 -

25 Sep 2026, 19:17

Type	Values Removed	Values Added
References	~~() https://gitlab.gnome.org/Archive/NetworkManager-fortisslvpn/-/work_items/80 -~~	() https://gitlab.gnome.org/Archive/NetworkManager-fortisslvpn/-/work_items/80 -

25 Sep 2026, 18:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-25 18:17

Updated : 2026-09-30 19:57

NVD link : CVE-2026-91839

Mitre link : CVE-2026-91839

CVE.ORG link : CVE-2026-91839

JSON object : View

Products Affected

No product.

CWE

CWE-93

Improper Neutralization of CRLF Sequences ('CRLF Injection')

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