CVE-2026-123025

CRITICAL 1 PoC
INFO Priority: 0.06 BB Relevance: 79/100
Published: 2026-11-05 Modified: 2026-11-12 First seen: 2026-11-05 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

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

Description

An OS Command Injection vulnerability was discovered in the Google Cloud DNS validation module of the OPNsense os-acme-client plugin through 4.17. The DnsGcloud::prepare() method decodes the dns_gcloud_key model field and directly interpolates the string fields gcloud_account and gcloud_project into a shell command passed to proc_open() via LeUtils::run_shell_command() without any validation or escaping. A remote authenticated user with privileges to issue or renew certificates through the WebGUI/API can achieve arbitrary code execution as root.

Affected Software (2)

VendorProductVersion
OPNsense os-acme-client 0
OPNsense os-acme-client 0

References & Advisories (1)

Proof of Concept (1)

Bug Bounty Relevance

79 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction
✓ PoC available (1)

CVSS Score

9.4 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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

EPSS — Exploitation Probability

0.63%
Raw Score 0.006300
Percentile 50.7%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00630
2026-11-12
0.00630
2026-11-10
0.00630
2026-11-09
0.00630
2026-11-08
0.00630
2026-11-07
0.00630
2026-11-06
0.00630
2026-11-05
0.00630

Intelligence Sources

mitre ref →
nvd ref →