CVE-2026-91841Hinoki check available

Root command execution via CA-File newline injection

Published Sep 25, 2026 · Updated Sep 25, 2026

Command injection in GNOME NetworkManager-vpnc allows local users to execute arbitrary commands as root through a crafted VPN profile. The CA-File path is validated only as an existing absolute path, then written unescaped into vpnc's line-oriented configuration, so an embedded newline introduces an attacker-controlled directive. Exploitation requires the plugin to be installed and a local unprivileged user to load and activate a malicious VPN configuration; actual VPN use is otherwise unnecessary.

CVSS severityUnavailable
Unscored
EPSS probability0.19%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Command injection in GNOME NetworkManager-vpnc allows local users to execute arbitrary commands as root through a crafted VPN profile. The CA-File path is validated only as an existing absolute path, then written unescaped into vpnc's line-oriented configuration, so an embedded newline introduces an attacker-controlled directive. Exploitation requires the plugin to be installed and a local unprivileged user to load and activate a malicious VPN configuration; actual VPN use is otherwise unnecessary.

The record

CVE
CVE-2026-91841
Published
Sep 25, 2026
Updated
Sep 25, 2026
Vendor
GNOME
Product
NetworkManager-vpnc
Classifications
T1548
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=0 <*

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

GNOME · NetworkManager-vpncversion=0 <*

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1548Abuse Elevation Control Mechanism

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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