CVE-2026-91841
Networkmanager-vpnc: networkmanager-vpnc: incomplete fix for cve-2018-10900 allows root privilege escalation via ca-file path newline injection
- Published
- Updated
- Reserved
- Assigned by
- fedora
Description
A flaw was found in NetworkManager-vpnc, a VPN plugin for NetworkManager. A local unprivileged user can exploit this vulnerability by injecting a newline character into the CA-File path. This manipulation allows the user to execute arbitrary commands as the root user, leading to local privilege escalation.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| fedoraCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Deferred | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.19% · top 91% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
- affected < *
What to do
Workaround: To mitigate this issue, remove the `NetworkManager-vpnc` package if the vpnc VPN plugin functionality is not required on the system. This will prevent a local unprivileged user from exploiting the flaw. To remove the package, use the following command: `sudo dnf remove NetworkManager-vpnc` Note that removing this package will disable the ability to use vpnc-based VPN connections.
References (3)
- https://access.redhat.com/security/cve/CVE-2026-91841 (opens in a new tab)vdb-entryx_refsource_REDHAT
- RHBZ#2533651 (opens in a new tab)issue-trackingx_refsource_REDHAT
- https://gitlab.gnome.org/Archive/NetworkManager-vpnc/-/work_items/20 (opens in a new tab)exploit
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-91841)Record last updated .