CVE-2026-111225CWE-78command-injection

CVE-2026-111225

Medium · published October 15, 2026

CVSS v3.1
5.0
EPSS
6%
Percentile
93.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.0 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
CVSS v4.0
2.3 · CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
EPSS
0.06207 · 93.5th percentile
Weakness
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-10-15T23:17Z
Affected products (1)
ProductVersionsFixed in
pfsense/pfsense≥ 2.5.0, ≤ 2.9.0—
References (4)
https://abraxaslabs.tech/research/pfsense-ce-leftovers · [email protected]https://github.com/abraxas/pfsense-ovpn-learn-cn · [email protected]https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/sbin/openvpn.learn-address.sh#L57-L62 · [email protected]https://www.vulncheck.com/advisories/netgate-pfsense-ce-2.5.0-through-2.9.0-os-command-injection-via-openvpn-learn-address-sh · [email protected]
EPSS history
Timeline
  • 17 OCT 03:28Z
    EPSS moved — → 3%
    epss
  • 15 OCT 18:46Z
    Netgate pfSense CE 2.5.0 through 2.9.0 OS Command Injection via openvpn.learn-address.sh
    cvelistv5
  • 15 OCT 18:46Z
    Netgate pfSense CE 2.5.0 through 2.9.0 OS Command Injection via openvpn.learn-address.sh
    cvelistv5