High severity7.5NVD Advisory· Published May 3, 2024· Updated Jun 17, 2026
CVE-2023-39477
CVE-2023-39477
Description
Inductive Automation Ignition ConditionRefresh Resource Exhaustion Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Inductive Automation Ignition. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of OPC UA ConditionRefresh requests. By sending a large number of requests, an attacker can consume all available resources on the server. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-20499.
AI Insight
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Affected products
3cpe:2.3:a:inductiveautomation:ignition:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:inductiveautomation:ignition:*:*:*:*:*:*:*:*range: >=8.1.0,<8.1.33
- (no CPE)
- Inductive Automation/Ignitionv5Range: 8.1.24
Patches
Vulnerability mechanics
References
2- www.zerodayinitiative.com/advisories/ZDI-23-1050/nvdThird Party Advisory
- inductiveautomation.com/downloads/releasenotes/8.1.33nvdRelease Notes
News mentions
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