TI-2023-20609 Aliases CVE-2023-39477 GHSA-g752-372v-qjj2

Uncontrolled resource consumption in Inductive Automation Ignition

MEDIUM 42CWE-400Published 2024-05-03 · Updated 2024-08-02

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-400.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.01538 75th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Inductive Automation	Ignition	8.1.24	—	No fix listed	CNA

Ignition VendorInductive Automation Affected 8.1.24 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:inductiveautomation:ignition::::::::	8.1.0 to before 8.1.33	Vulnerable	Inductive Automation

cpe:2.3:a:inductiveautomation:ignition:*:*:*:*:*:*:*:* Versions 8.1.0 to before 8.1.33 Vulnerable ·Inductive Automation

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2023-39477
2026-10-03 Alias added: GHSA-g752-372v-qjj2

References

Advisory 2

TI-2023-20607 Deserialization of untrusted data in Inductive Automation Ignition CVSS 3.1CRITICAL 9.8
TI-2023-20608 Deserialization of untrusted data in Inductive Automation Ignition CVSS 3.1CRITICAL 9.8
TI-2022-16300 Authentication bypass in Inductive Automation Ignition CVSS 3.1CRITICAL 9.8
TI-2023-20605 Deserialization of untrusted data in Inductive Automation Ignition CVSS 3.1HIGH 8.8
TI-2023-19548 Inductive Automation Ignition OPC UA Quick Client Task Scheduling Exposed Dangerous… CVSS 3.1HIGH 8.8
TI-2023-27455 Deserialization of untrusted data in Inductive Automation Ignition CVSS 3.1HIGH 8.8

See all 34 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences