CVE-2026-111224
pfSense CE through 2.9.0 contains an OS command injection vulnerability in the OpenVPN…
- Risk score
- 64/100
- CVSS
- 7.5 v3.1
- Exploit chance (30 days)
- 5.4%
- Published
- 15 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- pfSense CE through 2.9.0 contains an OS command injection vulnerability in the OpenVPN openvpn.connect_async.sh script that allows authenticated VPN users to execute commands as root via crafted usernames. Attackers authenticated through RADIUS or LDAP can use usernames containing single quotes and shell metacharacter…
- Affected
- See advisory
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Why it is Amber
- CVSS 7.5 high
- Exploitation likely: EPSS 5.4% (top 7%)
References
- https://abraxaslabs.tech/research/pfsense-ce-leftovers
- https://github.com/abraxas/pfsense-ovpn-connect-eval
- https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/sbin/openvpn.connect_async.sh#L83-L114
- https://www.vulncheck.com/advisories/netgate-pfsense-ce-through-2.9.0-os-command-injection-via-openvpn-connect-async-sh
Original description
pfSense CE through 2.9.0 contains an OS command injection vulnerability in the OpenVPN openvpn.connect_async.sh script that allows authenticated VPN users to execute commands as root via crafted usernames. Attackers authenticated through RADIUS or LDAP can use usernames containing single quotes and shell metacharacters to break out of the eval'd pfctl anchor name on connect or disconnect.
Last activity 15 Oct 2026. Patch Forecast updates every hour.