CVE-2026-91841 Command injection in NetworkManager-vpnc
Local attackers can escalate privileges to root by injecting newlines into CA file paths in NetworkManager-vpnc, enabling arbitrary command execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-91841?
CVE-2026-91841 is a high-severity command injection vulnerability in GNOME NetworkManager-vpnc, published on 25 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A flaw was found in NetworkManager-vpnc, a VPN plugin for NetworkManager. A local unprivileged user can exploit this vulnerability by injecting a newline character into the CA-File path. This manipulation allows the user to execute arbitrary commands as the root user, leading to local privilege escalation.
Weakness: CWE-93
Which versions are affected by CVE-2026-91841?
How do I fix CVE-2026-91841?
No fix has been published for CVE-2026-91841 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-91841 being exploited?
There is no known exploitation of CVE-2026-91841 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-91841, GHSA-w3p6-vc7r-vcv4, UBUNTU-CVE-2026-91841.