pfSense is a widely deployed firewall; authenticated IPsec users can gain root on perimeter devices, enabling full network/device compromise across organizations.
CVE-2026-111223
Authenticated IPsec Mobile users can inject commands via login_banner to gain root.
Is CVE-2026-111223 being exploited?
Not confirmed. CVE-2026-111223 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked.
How severe is CVE-2026-111223?
CVE-2026-111223 is rated High with a CVSS score of 8.6. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-111223?
Yes. A fix has been recorded for CVE-2026-111223. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-111223 affect?
CVE-2026-111223 affects Netgate pfSense CE 2.7.0 - 2.9.0. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-111223?
Apply vendor patch/commit now; restrict IPsec Mobile access and audit devices.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Auth'd IPsec Mobile users can inject '}' in login_banner to define charon start-scripts and execute arbitrary commands as root, enabling full system compromise.
Immediate action required
- affected>= 2.7.0 and <= 2.9.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.