CVE-2026-91837
Networkmanager-iodine: networkmanager-iodine: local privilege escalation to root via nameserver option injection
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
A flaw was found in NetworkManager-iodine, the iodine VPN plugin for NetworkManager. A local unprivileged user can exploit a vulnerability in how the 'nameserver' setting is processed when establishing an iodine VPN connection. By embedding shell metacharacters (special characters that can execute commands) in the 'nameserver' value, an attacker can inject and execute arbitrary commands. These commands run with root privileges before the application drops its elevated permissions, leading to local privilege escalation.
| CWE | CWE-78 |
| Vendor | gnome |
| Product | networkmanager-iodine |
| Published | Sep 25, 2026 |
| Last Updated | Sep 25, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
GNOME / NetworkManager-iodine
0 < *
References
Credits
Red Hat would like to thank Andreas Gabriel Berbescu for reporting this issue.