CVE catalog
CVE-2026-91838
network-manager-sstp: CVE-2026-91838
- Severity
- High · CVSS 7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.10% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | network-manager-sstp | sid | 1.3.2-1 | vulnerable |
| Debian | network-manager-sstp | trixie | 1.3.2-1 | vulnerable |
| Debian | network-manager-sstp | bookworm | 1.3.0-2 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | network-manager-sstp | source | sid | (unfixed) | not yet assigned | Not reported | [1148112] |
| Debian | network-manager-sstp | source | trixie | (unfixed) | not yet assigned | Not reported | [1148112] |
| Debian | network-manager-sstp | source | bookworm | (unfixed) | not yet assigned | Not reported | [1148112] |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [network-manager-sstp]Affected
Details (2)
1.3.0-2· amd64 · bookwormAffected
dsa · network-manager-sstp · debian · bookworm; dsa · network-manager-sstp · debian · 12
1.3.0-2· arm64 · bookwormAffected
dsa · network-manager-sstp · debian · bookworm; dsa · network-manager-sstp · debian · 12
- [network-manager-sstp-gnome]Affected
Source package: [network-manager-sstp]
Details (2)
1.3.0-2· amd64 · bookwormAffected
dsa · network-manager-sstp · debian · bookworm; dsa · network-manager-sstp · debian · 12
1.3.0-2· arm64 · bookwormAffected
dsa · network-manager-sstp · debian · bookworm; dsa · network-manager-sstp · debian · 12
[Debian 13 (Trixie)]
- [network-manager-sstp]Affected
Source package: [network-manager-sstp]
Details (2)
1.3.2-1+b5· amd64 · trixieAffected
dsa · network-manager-sstp · debian · 13
1.3.2-1+b6· arm64 · trixieAffected
dsa · network-manager-sstp · debian · 13
- [network-manager-sstp-gnome]Affected
Source package: [network-manager-sstp]
Details (2)
1.3.2-1+b5· amd64 · trixieAffected
dsa · network-manager-sstp · debian · 13
1.3.2-1+b6· arm64 · trixieAffected
dsa · network-manager-sstp · debian · 13
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-91838]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-91838]
- [https://security-tracker.debian.org/tracker/CVE-2026-91838]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-91838.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]