CVE-2026-4436 - Vulnerability Analysis

Overview

A product contains a broken access control vulnerability caused by lack of proper validation of Modbus packets, letting low-privileged remote attackers manipulate odorant injection register values, exploit requires network access.

Severity & Score

Impact

Attackers can manipulate odorant injection levels, potentially causing safety hazards or operational disruptions.

Mitigation

Update to the latest version or apply vendor patches addressing Modbus packet validation.

References

• https://lincenergysystems-my.sharepoint.com/:f:/p/h_baer/IgDYaHIhXpyLQJvnKPd6b80TAUgV7Lp8qmVYBFUb0lmr7ak?e=JLeADm
• https://www.cisa.gov/news-events/ics-advisories/icsa-26-099-02
• https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-099-02.json

Related Resources

• Vulnerability Intelligence Dashboard
• Credential Scanner