DEBIAN-CVE-2026-91840

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Source
https://security-tracker.debian.org/tracker/CVE-2026-91840
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-91840.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-91840
Upstream
  • CVE-2026-91840
Published
2026-09-25T18:17:32Z
Modified
2026-10-01T08:47:29Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Debian:12 / network-manager-vpnc

Package

Name
network-manager-vpnc
Purl
pkg:deb/debian/network-manager-vpnc?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.2.8-4
1.2.8-5
1.2.8-6
1.2.8-7
1.2.8-8
1.4.0-1
1.4.0-2
1.4.0-3
1.4.0-4

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-91840.json"

Debian:13 / network-manager-vpnc

Package

Name
network-manager-vpnc
Purl
pkg:deb/debian/network-manager-vpnc?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.4.0-2
1.4.0-3
1.4.0-4

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-91840.json"

Debian:14 / network-manager-vpnc

Package

Name
network-manager-vpnc
Purl
pkg:deb/debian/network-manager-vpnc?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.4.0-2
1.4.0-3
1.4.0-4

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-91840.json"