CVE-2026-4436

GPL Odorizers GPL750 Missing Authentication for Critical Function

8.6 High

A low-privileged remote attacker can send Modbus packets to manipulate register values that are inputs to the odorant injection logic such that too much or too little odorant is injected into a gas line.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: High
Availability: None

Exploit likelihood

0.46%Up 0.4 points since Apr 10, 2026

What each source reports

CVE List Score used 8.6

GPL Odorizers GPL750 Missing Authentication for Critical Function

Record: CVE-2026-4436
CVSS 3.1: 8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Weakness: CWE-306
Updated: 2026-11-02

EUVDEUVD-2026-21066 8.6

Record: EUVD-2026-21066
CVSS 3.1: 8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-frgm-v97w-x7w6 8.6

A low-privileged remote attacker can send Modbus packets to manipulate register values that are...

Record: GHSA-frgm-v97w-x7w6
CVSS 3.1: 8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Weakness: CWE-306
Updated: 2026-11-02

NVD 8.6

Record: CVE-2026-4436
CVSS 3.1: 8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Weakness: CWE-306
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-4436 is a high vulnerability (CVSS 8.6) in Gpl Odorizers Gpl750 (xl7 Prime), published April 9, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.46%, the 39th percentile. No source names a fixed version.