# CVE-2026-91841: NetworkManager-vpnc CA-File path newline injection privilege escalation

Source: https://junglewise.ai/threats/cve-2026-91841-a-flaw-was-found-in-networkmanager-vpnc-a-vpn-plugin-for  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-25. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-91841 · Severity: high · CVSS 7.8 · Published 2026-09-25

NetworkManager-vpnc is a VPN plugin that enables Cisco VPN connectivity in Linux network management. A local user on a system with this plugin installed can inject a newline character into the CA certificate file path configuration to execute arbitrary commands with root privileges, bypassing normal access controls.

Vendors: [Gnome](https://junglewise.ai/threats/vendors/gnome).

## Quick answers

**Is CVE-2026-91841 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-91841 being exploited in the wild.

**How severe is CVE-2026-91841?** High severity, with a CVSS score of 7.8, published 25 September 2026.

**Which products and versions are affected?** GNOME NetworkManager-vpnc.

**Is there a fix for CVE-2026-91841?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-91841 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-91841?** Check whether you run Gnome NetworkManager-vpnc. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is a CRLF injection flaw (CWE-93) in how NetworkManager-vpnc processes the CA-File path parameter. A local unprivileged attacker can exploit this by crafting a malicious CA-File path containing a newline character, which causes the plugin to execute arbitrary commands as root. The attack requires local access to the system and the NetworkManager-vpnc package to be installed.

## Affected products

- GNOME NetworkManager-vpnc

## Timeline

- 2026-09-25: disclosed

## References

- [https://gitlab.gnome.org/GNOME/NetworkManager-vpnc](https://gitlab.gnome.org/GNOME/NetworkManager-vpnc)
- [https://access.redhat.com/security/cve/CVE-2026-91841](https://access.redhat.com/security/cve/CVE-2026-91841)

## Related threats

- [NetworkManager-vpnc privilege escalation via newline injection in VPN username](https://junglewise.ai/threats/cve-2026-91840-a-flaw-was-found-in-networkmanager-vpnc-this-vulnerability-allows)