CVEvulnerability
CVE-2026-91840
7.8 HIGH
Official page ↗
- Status
- Deferred
- Published
- 2026-09-25
- Last modified
- 2026-09-30
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-93
Description
A flaw was found in NetworkManager-vpnc. This vulnerability allows a local unprivileged user to escalate privileges to root. By injecting a newline character into the VPN username field, an attacker can manipulate the vpnc configuration to execute an arbitrary program with root privileges when the malicious VPN connection is activated.
Related
Weakness · CWE (1)
- CWE-93 Improper Neutralization of CRLF Sequences weakness
References
- https://access.redhat.com/security/cve/CVE-2026-91840 access.redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2533642 bugzilla.redhat.com
- https://gitlab.gnome.org/Archive/NetworkManager-vpnc/-/work_items/19 gitlab.gnome.org