High
Networkmanager-vpnc: networkmanager-vpnc: local privilege escalation to root via newline injection in vpn username
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.
Announced Group revision 1
Original source ↗CVE-2026-91840
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-91840
NetworkManager-vpnc
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "GNOME",
"product": "NetworkManager-vpnc",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "*",
"versionType": "semver"
}
],
"packageName": "network-manager-vpnc",
"collectionURL": "https://gitlab.gnome.org/GNOME/NetworkManager-vpnc",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-91840
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #3039 · Revision 1
- Added to Heist Feed
- Publisher date