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VULNERABILITIES

CVE-2026-91839 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://gitlab.gnome.org/Archive/NetworkManager-fortisslvpn/-/work_items/80 CISA-ADP
https://access.redhat.com/security/cve/CVE-2026-91839 [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2533640 [email protected]
https://gitlab.gnome.org/Archive/NetworkManager-fortisslvpn/-/work_items/80 [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-93Improper Neutralization of CRLF Sequences ('CRLF Injection')[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

3 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-91839
NVD Published Date:
Sep 25, 2026
NVD Last Modified:
Sep 26, 2026
Source:
[email protected]
CVE-2026-91839 Details - Not Deferred