CVE-2026-91837
Networkmanager-iodine: networkmanager-iodine: local privilege escalation to root via nameserver option injection
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
7.8
Networkmanager-iodine: networkmanager-iodine: local privilege escalation to root via nameserver option injection
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.
- Record
CVE-2026-91837- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-78
- Updated
- 2026-11-02
EUVDEUVD-2026-87155
7.8
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.
- Record
EUVD-2026-87155- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-hrpv-95c6-mpj2
7.8
A flaw was found in NetworkManager-iodine, the iodine VPN plugin for NetworkManager. A local...
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.
- Record
GHSA-hrpv-95c6-mpj2- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-78
- Updated
- 2026-11-02
NVD
7.8
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.
- Record
CVE-2026-91837- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-78
- Updated
- 2026-11-02
OSVDEBIAN-CVE-2026-91837
7.8
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.
- Record
DEBIAN-CVE-2026-91837- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-91837
7.8
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.
- Record
UBUNTU-CVE-2026-91837- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
network-manager-iodineDebian:12 |
All versions, plus listed versions 1.2.0-3.21.2.0-3.31.2.0-3.4 |
None known |
network-manager-iodineDebian:13 |
All versions, plus listed versions 1.2.0-3.31.2.0-3.4 |
None known |
network-manager-iodineUbuntu:16.04:LTS |
All versions, plus listed versions 0.0.5-1ubuntu1 |
None known |
network-manager-iodineUbuntu:18.04:LTS |
All versions, plus listed versions 1.2.0-11.2.0-3 |
None known |
network-manager-iodineUbuntu:20.04:LTS |
All versions, plus listed versions 1.2.0-3 |
None known |
network-manager-iodineUbuntu:22.04:LTS |
All versions, plus listed versions 1.2.0-3ubuntu11.2.0-3.1 |
None known |
network-manager-iodineUbuntu:24.04:LTS |
All versions, plus listed versions 1.2.0-3.21.2.0-3.31.2.0-3.3build11.2.0-3.3build2 |
None known |
network-manager-iodineUbuntu:26.10 |
All versions, plus listed versions 1.2.0-3.4 |
None known |
network-manager-iodineUbuntu:26.04:LTS |
All versions, plus listed versions 1.2.0-3.3build21.2.0-3.3build31.2.0-3.4 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-91837 is a high vulnerability (CVSS 7.8) in Gnome Networkmanager-iodine, published September 25, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.14%, the 3rd percentile. No source names a fixed version.
References
access.redhat.com/security/cve/CVE-2026-91837
bugzilla.redhat.com/show_bug.cgi?id=2533634
gitlab.gnome.org/GNOME/network-manager-iodine/-/work_items/4
nvd.nist.gov/vuln/detail/CVE-2026-91837
github.com/advisories/GHSA-hrpv-95c6-mpj2
security-tracker.debian.org/tracker/CVE-2026-91837
ubuntu.com/security/CVE-2026-91837
cve.org/CVERecord?id=CVE-2026-91837
blogs.gnome.org/mcatanzaro/2026/09/15/privilege-escalation-vulnerabilities-in-networkmanager-plugins