CVE-2026-91839

high

A flaw was found in NetworkManager-fortisslvpn, the FortiSSLVPN plugin for NetworkManager.

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

7.8

7.8 (CVSS v3.1)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity source: NVD CVSS v3.1 (patrick@puiterwijk.org)

Timeline (UTC)

Published: 2026-09-25 18:17

Modified: 2026-09-30 19:57

NVD status: Deferred

Last synced 2 days ago

Verified against the source API 2026-10-27 06:55 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

Not reported by the source (unknown — not "none").

Weakness classification (CWE)

CWE-93

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

No vendor advisory or patch reference tagged by NVD. Check the references below.

References

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

Data sources

NVD CVE API 2.0 — fetched 2026-10-27 06:55 UTC · record ↗

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