critical severity August 11, 2026 · 1 min read

CISA ICS Advisory: Johnson Controls C-CURE 9000 and Victor application server (Update A)

Here’s what this advisory affects, and what to do about it.

Successful exploitation of these vulnerabilities could allow an attacker with network access to achieve remote code execution. The following versions of Johnson Controls C-CURE 9000 and Victor application server (Update A) are affected: C-CURE 9000 victor Application Server victor victor Web

CISA ICS Advisory: Johnson Controls C-CURE 9000 and Victor application server (Update A)

On August 11, 2026, the Cybersecurity and Infrastructure Security Agency (CISA) released an updated Industrial Control Systems (ICS) advisory detailing vulnerabilities in Johnson Controls products.

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Remote code execution via network access

The advisory states that successful exploitation of the vulnerabilities could allow an attacker with network access to achieve remote code execution. The advisory does not say whether the flaws have been exploited in the wild.

Affected products

The following versions are affected:

C-CURE 9000
Victor Application Server
Victor
Victor Web

CISA has not listed specific version numbers or build strings in the advisory.

What to do

Determine whether any C-CURE 9000 or Victor application server products are in use in your environment.
Apply the vendor-provided updates or patches as soon as they become available.
Implement network segmentation to limit direct access to affected systems.
Follow additional mitigation guidance published in the CISA advisory.
Monitor Johnson Controls’ official security channel for further updates on this issue.

Organisations operating industrial security and access-control systems should prioritise vendor coordination channels to maintain awareness of ICS-specific disclosures as they are published.

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Sources: CISA ICS Advisory

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