Is CVE-2026-4436 actively exploited?

No active exploitation of CVE-2026-4436 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-4436 be exploited remotely?

Yes. CVE-2026-4436 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-4436?

CVE-2026-4436 has a CVSS score of 8.6 (HIGH).

HOME VULNERABILITIESCVE-2026-4436

HIGH

CVE-2026-4436

CWE-306Published: April 9, 2026· Updated: Apr 13, 2026

8.6

CVSS v3.1

EPSS:0.05%probability of exploitation in 30 daysPercentile:15.0th

Official Description

A low-privileged remote attacker can send Modbus packets to manipulate

too much or too little odorant is injected into a gas line.

NVD Source

Technical Analysis

CVE-2026-4436 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 8.6.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeChanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Exploit-DB

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Rapid7 / Metasploit

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PacketStorm

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News & Research Mentioning CVE-2026-4436

GPL Odorizers GPL750

CISA Alerts· Apr 9, 2026

View CSAF Summary Successful exploitation of this vulnerability could allow a low privileged remote attacker to manipulate register values, which would result in too much or too little odorant being injected into a gas line. The following versions of GPL Odorizers GPL750 are affected: GPL750 (XL4) >=v1.0| GPL750 (XL4 Prime) >=v4.0| GPL750 (XL7) >=v13.0| GPL750 (XL7 Prime) >=v18.4| CVSS Vendor Equipment Vulnerabilities v3 8.6 GPL Odorizers GPL Odorizers GPL750 Missing Authentication for Critical Function Background Critical Infrastructure Sectors: Critical Manufacturing Countries/Areas Deployed: Worldwide Company Headquarters Location: United States Vulnerabilities Expand All + CVE-2026-4436 A low-privileged remote attacker can send Modbus packets to [xlite_meta score:79 src:CISA Alerts xlite_fp:b0329e157874fddefa7e9e4ed44865756f51b0bc45194fc3750b6a3c739ca832]