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Vendor Workaround
The vulnerability requires a local unprivileged user to activate a malicious VPN connection. If the NetworkManager-sstp package is not required, removing it will eliminate the attack vector. To remove the `NetworkManager-sstp` package: `sudo dnf remove NetworkManager-sstp` This action may impact functionality that relies on SSTP VPN connections.
Tracking
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Fri, 25 Sep 2026 19:30:00 +0000
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ssvc
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Fri, 25 Sep 2026 18:00:00 +0000
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| Description | A flaw was found in NetworkManager-sstp, the SSTP VPN plugin for NetworkManager. A local unprivileged user can exploit this vulnerability by embedding special characters, known as shell metacharacters, into VPN connection profile fields such as CA certificate or proxy settings. These unescaped characters are then processed by the `pppd` daemon, which runs with root privileges, allowing the attacker to execute arbitrary commands with elevated permissions when a malicious VPN connection is activated. | |
| Title | Networkmanager-sstp: networkmanager-sstp: local privilege escalation to root via shell injection in vpn profile fields | |
| Weaknesses | CWE-78 | |
| References |
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| Metrics |
cvssV3_1
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Subscriptions
No data.
Status: PUBLISHED
Assigner: fedora
Published:
Updated: 2026-09-25T18:16:17.928Z
Reserved: 2026-09-15T08:28:01.333Z
Link: CVE-2026-91838
Updated: 2026-09-25T18:16:13.869Z
Status : Received
Published: 2026-09-25T18:17:32.530
Modified: 2026-09-25T19:17:58.647
Link: CVE-2026-91838
No data.
OpenCVE Enrichment
Updated: 2026-09-25T20:30:17Z
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CWE-78
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')