How severe is CVE-2020-12033?

CVE-2020-12033 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-12033 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-12033?

CVE-2020-12033 affects Rockwellautomation Factorytalk Services Platform. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-12033?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-12033 published?

CVE-2020-12033 was published on 2020-06-23 and last updated on 2026-06-17.

CVE-2020-12033

CVE-2020-12033 is a high-severity vulnerability in Rockwellautomation Factorytalk Services Platform with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 5.8
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Rockwellautomation Factorytalk Services Platform
Published: 2020-06-23
Last modified: 2026-06-17

Description

In Rockwell Automation FactoryTalk Services Platform, all versions, the redundancy host service (RdcyHost.exe) does not validate supplied identifiers, which could allow an unauthenticated, adjacent attacker to execute remote COM objects with elevated privileges.

Frequently asked questions

What is CVE-2020-12033?: In Rockwell Automation FactoryTalk Services Platform, all versions, the redundancy host service (RdcyHost.exe) does not validate supplied identifiers, which could allow an unauthenticated, adjacent attacker to execute remote COM objects with elevated privileges.
How severe is CVE-2020-12033?: CVE-2020-12033 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-12033 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-12033?: CVE-2020-12033 affects Rockwellautomation Factorytalk Services Platform. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-12033?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-12033 published?: CVE-2020-12033 was published on 2020-06-23 and last updated on 2026-06-17.

References

https://www.us-cert.gov/ics/advisories/icsa-20-170-04

Affected products (1)

cpe:2.3:a:rockwellautomation:factorytalk_services_platform:*:*:*:*:*:*:*:*

More vulnerabilities in Rockwellautomation Factorytalk Services Platform

CVE-2020-14516 — Critical (CVSS 10.0): In Rockwell Automation FactoryTalk Services Platform Versions 6.10.00 and 6.11.00, there is an issue with the…
CVE-2024-21917 — Critical (CVSS 9.8): A vulnerability exists in Rockwell Automation FactoryTalk® Service Platform that allows a malicious user to obtain the…
CVE-2021-22681 — Critical (CVSS 9.8): Rockwell Automation Studio 5000 Logix Designer Versions 21 and later, and RSLogix 5000 Versions 16 through 20 use a key…
CVE-2020-6967 — Critical (CVSS 9.8): In Rockwell Automation all versions of FactoryTalk Diagnostics software, a subsystem of the FactoryTalk Services…
CVE-2024-21915 — Critical (CVSS 9.0): A privilege escalation vulnerability exists in Rockwell Automation FactoryTalk® Service Platform (FTSP). If exploited,…
CVE-2021-32960 — High (CVSS 8.5): Rockwell Automation FactoryTalk Services Platform v6.11 and earlier, if FactoryTalk Security is enabled and deployed…

All CVEs affecting Rockwellautomation Factorytalk Services Platform →

Other CWE-20 (Improper Input Validation) vulnerabilities

CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…

Browse all CWE-20 (Improper Input Validation) vulnerabilities →