# CVE-2026-75131: network-manager-l2tp: NetworkManager-l2tp through 1.52.4, fixed in 1.52.6, contains a privilege escalation vulnerability that allows local...

CVE-2026-75131 is fixed in network-manager-l2tp on 1 platform, first by DEBIAN-CVE-2026-75131, released September 17, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-75131
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0018
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 23, 2026

## Description

NetworkManager-l2tp through 1.52.4, fixed in 1.52.6, contains a privilege escalation vulnerability that allows local users with permission to create VPN connections to execute arbitrary code as root by injecting pppd options through a crafted VPN username. Attackers can embed a double-quote character or whitespace in the username to break out of the pppd options file quoting context and include the pppd plugin directive, causing the privileged pppd process to load an attacker-controlled shared object.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | network-manager-l2tp Debian 12.15 (bookworm) | 1.20.8-1+deb12u1 | [DEBIAN-CVE-2026-75131](https://patchblox.com/security/data/fix/linux/debian-cve-2026-75131.md) | Sep 17, 2026 |
| Linux | network-manager-l2tp Debian 13.5 (trixie) | 1.20.20-2+deb13u1 | [DEBIAN-CVE-2026-75131](https://patchblox.com/security/data/fix/linux/debian-cve-2026-75131.md) | Sep 17, 2026 |
| Linux | network-manager-l2tp Debian 14 | 1.52.6-1 | [DEBIAN-CVE-2026-75131](https://patchblox.com/security/data/fix/linux/debian-cve-2026-75131.md) | Sep 17, 2026 |

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Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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