CVE-2018-10900 Command injection in networkmanager-vpnc

What is CVE-2018-10900?

CVE-2018-10900 is a high-severity command injection vulnerability in Debian Debian Linux, published on 26 Jul 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Network Manager VPNC plugin (aka networkmanager-vpnc) before version 1.2.6 is vulnerable to a privilege escalation attack. A new line character can be used to inject a Password helper parameter into the configuration data passed to VPNC, allowing an attacker to execute arbitrary commands as root.

Weakness: CWE-78

Which versions are affected by CVE-2018-10900?

It affects 2 products.

Products include Debian Debian Linux, Gnome Network Manager Vpnc.

How do I fix CVE-2018-10900?

Apply the vendor's patch.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2018-10900 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-10900 exists.

Public exploit code: 1 Metasploit module and 2 Exploit-DB entries.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2018-10900, DLA-1454-1, DSA-4253-1, GHSA-6cmp-3578-qc4p, SUSE-SU-2018:2297-1, UBUNTU-CVE-2018-10900 and 1 more.