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2 vulnerabilities found for NetworkManager-sstp by GNOME
CVE-2026-91838 (GCVE-0-2026-91838)
Vulnerability from nvd – Published: 2026-09-25 17:51 – Updated: 2026-09-25 18:16
VLAI
EPSS
VEX
Title
Networkmanager-sstp: networkmanager-sstp: local privilege escalation to root via shell injection in vpn profile fields
Summary
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.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 18:16 UTC
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-91838 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2533637 | issue-trackingx_refsource_REDHAT |
| https://gitlab.gnome.org/GNOME/network-manager-ss… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| GNOME | NetworkManager-sstp |
Affected:
0 , < *
(semver)
|
Date Public
2026-09-15 09:39
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CVE-2026-91838 (GCVE-0-2026-91838)
Vulnerability from cvelistv5 – Published: 2026-09-25 17:51 – Updated: 2026-09-25 18:16
VLAI
EPSS
VEX
Title
Networkmanager-sstp: networkmanager-sstp: local privilege escalation to root via shell injection in vpn profile fields
Summary
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.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 18:16 UTC
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-91838 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2533637 | issue-trackingx_refsource_REDHAT |
| https://gitlab.gnome.org/GNOME/network-manager-ss… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| GNOME | NetworkManager-sstp |
Affected:
0 , < *
(semver)
|
Date Public
2026-09-15 09:39
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