CVE-2026-111226

HIGH
MEDIUM Priority: 0.56 BB Relevance: 64/100
Published: 2026-10-15 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: High
UI: None
AT: None
VC: High
VI: High
VA: High

Description

pfSense CE 2.4.5 through 2.9.0 contains an OS command injection vulnerability that allows authenticated WebGUI users with Advanced Admin Access privilege to execute commands as root via Login Protection settings. Attackers can submit sshguard threshold, block time, or detection time values containing newlines or $(...) that are written unvalidated to sshguard.conf and sourced as root on restart.

Weakness Classification (1)

Bug Bounty Relevance

64 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

8.6 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

EPSS — Exploitation Probability

6.55%
Raw Score 0.065480
Percentile 93.8%
Date 2026-10-29

EPSS Trend

2026-10-29
0.06548
2026-10-28
0.06548

Intelligence Sources

mitre ref →
nvd ref →