CVEvulnerability
CVE-2026-111225
2.3 LOW
Official page ↗
- Status
- Analyzed
- Published
- 2026-10-15
- Last modified
- 2026-10-19
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 2.3 LOW — 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- CVSS 3.1 ([email protected])
- 5.0 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
- CVSS 3.1 ([email protected])
- 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-78
Description
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.
Affected configurations
• pfsense pfsense (>= 2.5.0 <= 2.9.0)
Related
Weakness · CWE (1)
- CWE-78 Improper Neutralization of Special Elements used in an OS Command weakness
References
- https://abraxaslabs.tech/research/pfsense-ce-leftovers Issue Tracking
- https://github.com/abraxas/pfsense-ovpn-learn-cn Third Party Advisory
- https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/sbin/openvpn.learn-address.sh#L57-L62 Product
- https://www.vulncheck.com/advisories/netgate-pfsense-ce-2.5.0-through-2.9.0-os-command-injection-via-openvpn-learn-address-sh Third Party Advisory