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2.3

pfSense CE lets VPN users run system commands

CVE-2026-111225 · published 3 days ago
Summary

Versions 2.5.0 through 2.9.0 of Netgate pfSense CE let an authenticated VPN client add specially crafted data to their certificate name or username, which the system then runs as a low‑privilege user. This could let the client execute additional commands on the firewall, potentially affecting network security. Upgrade to a patched version or apply the vendor’s recommended configuration changes to stop the misuse.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
netgate pfsense ce <= 2.9.0
Original advisory text
Netgate pfSense CE 2.5.0 through 2.9.0 OS Command Injection via openvpn.learn-address.sh
Netgate pfSense CE 2.5.0 through 2.9.0 contains an OS command injection vulnerability in openvpn.learn-address.sh that allows authenticated VPN clients to execute commands as the unbound user. Attackers can embed shell metacharacters in the certificate common name or username, which is interpolated unquoted into su -c strings, when DNS Resolver client registration is enabled.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker partial control
Severity
2.3 Low
Exploitation
3% chance of attack within 30 days
Type
CWE-78OS Command Injection
Timeline
Published15 Oct 2026
Updated16 Oct 2026
First seen15 Oct 2026
Sources
CVE-2026-111225 · NVD
CVE-2026-111225 · MITRE
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