CVE catalog
CVE-2026-93337
NetworkManager-l2tp through 1.52.4, fixed in 1.52.6, contains an improper input validation vulnerability that allows local users with VPN connection creation permissions to inject arbitrary pppd direc
- Severity
- High · CVSS 8.5
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.15% · Oct 25, 2026
NetworkManager-l2tp through 1.52.4, fixed in 1.52.6, contains an improper input validation vulnerability that allows local users with VPN connection creation permissions to inject arbitrary pppd directives by supplying mru or mtu property values containing trailing non-numeric content after a valid integer. Attackers can exploit the verbatim write of unvalidated strings into the pppd options file via write_config_option() to inject the plugin directive, causing the privileged pppd process to load an attacker-controlled shared object and achieve arbitrary code execution as root.
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-l2tp | sid | 1.52.6-1 | fixed |
| Debian | network-manager-l2tp | forky | 1.52.6-1 | fixed |
| Debian | network-manager-l2tp | trixie | 1.20.20-2 | vulnerable |
| Debian | network-manager-l2tp | trixie-security | 1.20.20-2+deb13u1 | fixed |
| Debian | network-manager-l2tp | bookworm | 1.20.8-1 | vulnerable |
| Debian | network-manager-l2tp | bookworm-security | 1.20.8-1+deb12u1 | fixed |
| Ubuntu | network-manager-l2tp | 18.04 | 1.2.8-1 | vulnerable |
| Ubuntu | network-manager-l2tp | 18.04 | 1.2.8-2build1 | vulnerable |
| Ubuntu | network-manager-l2tp | 20.04 | 1.2.10-1 | vulnerable |
| Ubuntu | network-manager-l2tp | 20.04 | 1.2.14-1 | vulnerable |
| Ubuntu | network-manager-l2tp | 20.04 | 1.2.16-1 | vulnerable |
| Ubuntu | network-manager-l2tp | 22.04 | 1.2.18-1build1 | vulnerable |
| Ubuntu | network-manager-l2tp | 22.04 | 1.20.0-1 | vulnerable |
| Ubuntu | network-manager-l2tp | 22.04 | 1.20.0-1build1 | vulnerable |
| Ubuntu | network-manager-l2tp | 22.04 | 1.20.0-1build2 | vulnerable |
| Ubuntu | network-manager-l2tp | 24.04 | 1.20.8-1 | vulnerable |
| Ubuntu | network-manager-l2tp | 24.04 | 1.20.10-1 | vulnerable |
| Ubuntu | network-manager-l2tp | 24.04 | 1.20.12-1 | vulnerable |
| Ubuntu | network-manager-l2tp | 24.04 | 1.20.12-1build1 | vulnerable |
| Ubuntu | network-manager-l2tp | 24.04 | 1.20.12-1build2 | vulnerable |
| Ubuntu | network-manager-l2tp | 26.04 | 1.20.20-2 | vulnerable |
| Ubuntu | network-manager-l2tp | 26.04 | 1.52.0-2 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | network-manager-l2tp | source | sid | 1.52.6-1 | not yet assigned | Not reported | Not reported |
| Debian | network-manager-l2tp | source | forky | 1.52.6-1 | not yet assigned | Not reported | Not reported |
| Debian | network-manager-l2tp | source | trixie | 1.20.20-2+deb13u1 | not yet assigned | Not reported | Not reported |
| Debian | network-manager-l2tp | source | bookworm | 1.20.8-1+deb12u1 | not yet assigned | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [network-manager-l2tp]Affected
Details (2)
1.20.8-1· amd64 · bookwormAffected · Fixed:
1.20.8-1+deb12u1nvd · network-manager-l2tp · debian · bookworm; nvd · network-manager-l2tp · debian · 12
1.20.8-1· arm64 · bookwormAffected · Fixed:
1.20.8-1+deb12u1nvd · network-manager-l2tp · debian · bookworm; nvd · network-manager-l2tp · debian · 12
- [network-manager-l2tp-gnome]Affected
Source package: [network-manager-l2tp]
Details (2)
1.20.8-1· amd64 · bookwormAffected · Fixed:
1.20.8-1+deb12u1nvd · network-manager-l2tp · debian · bookworm; nvd · network-manager-l2tp · debian · 12
1.20.8-1· arm64 · bookwormAffected · Fixed:
1.20.8-1+deb12u1nvd · network-manager-l2tp · debian · bookworm; nvd · network-manager-l2tp · debian · 12
[Debian 13 (Trixie)]
- [network-manager-l2tp]Affected
Details (3)
1.20.20-2· amd64 · trixieAffected · Fixed:
1.20.20-2+deb13u1nvd · network-manager-l2tp · debian · 13
1.20.20-2· arm64 · trixieAffected · Fixed:
1.20.20-2+deb13u1nvd · network-manager-l2tp · debian · 13
1.20.20-2+deb13u1· amd64 · trixie-securityFixed · Fixed:
1.20.20-2+deb13u1nvd · network-manager-l2tp · debian · 13
- [network-manager-l2tp-gnome]Affected
Source package: [network-manager-l2tp]
Details (3)
1.20.20-2· amd64 · trixieAffected · Fixed:
1.20.20-2+deb13u1nvd · network-manager-l2tp · debian · 13
1.20.20-2· arm64 · trixieAffected · Fixed:
1.20.20-2+deb13u1nvd · network-manager-l2tp · debian · 13
1.20.20-2+deb13u1· amd64 · trixie-securityFixed · Fixed:
1.20.20-2+deb13u1nvd · network-manager-l2tp · debian · 13
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-93337]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-93337]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-93337]
- [https://security-tracker.debian.org/tracker/CVE-2026-93337]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93337.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]