What’s Vulnerable › Vulnerabilities

CVE-2026-91837: Networkmanager-iodine: networkmanager-iodine: local privilege escalation to root via nameserver option injection

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-25 · updated 2026-09-30
• Weakness: CWE-78

Description

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.

Affected products

• GNOME NetworkManager-iodine: all versions

References

• https://access.redhat.com/security/cve/CVE-2026-91837
• https://bugzilla.redhat.com/show_bug.cgi?id=2533634
• https://gitlab.gnome.org/GNOME/network-manager-iodine/-/work_items/4

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