Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/nm-l2tp/NetworkManager-l2tp/security/advisories/GHSA-v2wj-xr2
- https://www.vulncheck.com/advisories/networkmanager-l2tp-privilege-escalation-vi
- https://github.com/nm-l2tp/NetworkManager-l2tp/security/advisories/GHSA-v2wj-xr2
FAQ
What is CVE-2026-75131?
CVE-2026-75131 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 b...
How severe is CVE-2026-75131?
CVE-2026-75131 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-75131?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.