Dashboard / CVE-2026-111231

CVE-2026-111231

HIGH
MEDIUM Priority: 0.07 BB Relevance: 62/100
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

Netgate pfSense CE through 2.9.0 contains an authorization bypass vulnerability that allows read-only WebGUI users to replace config.xml because config_restore() and config_install() ignore the 'User - Config: Deny Config Write' privilege. Attackers holding page privileges for services_acb.php, uploadconfig.php, diag_confbak.php, or diag_backup.php can install a chosen config.xml to gain root-level code execution after reload or reboot.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
pfsense pfsense < 2.9.0

References & Advisories (5)

Bug Bounty Relevance

62 / 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

0.84%
Raw Score 0.008420
Percentile 57.8%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00842
2026-10-28
0.00842

Intelligence Sources

mitre ref →
nvd ref →

External Links