CVE-2026-91840: Networkmanager-vpnc: local privilege escalation to root via newline injection in vpn username
GNOME · NetworkManager-vpnc
Affected: GNOME NetworkManager-vpnc · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 9% of scored CVEs
DescriptionCVE.org
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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- GNOME · NetworkManager-vpnc0
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- GNOME
- Published
- September 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-91840 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.