# CVE-2026-64887: Johnson Controls Airwall hard-coded cryptographic key

Source: https://junglewise.ai/threats/cve-2026-64887-johnson-controls-airwall-hard-coded-cryptographic-key  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-14. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-64887 · Severity: info · Published 2026-08-14

Johnson Controls Airwall is a gateway device used to secure and manage building automation and network systems. The use of a hard-coded cryptographic key in Airwall versions before 4.1 allows attackers to decrypt or forge communications, potentially compromising the confidentiality and integrity of critical building control systems.

Vendors: [Johnson Controls](https://junglewise.ai/threats/vendors/johnson-controls).

## Quick answers

**Is CVE-2026-64887 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-64887 being exploited in the wild.

**How severe is CVE-2026-64887?** Informational severity, published 14 August 2026.

**Which products and versions are affected?** Johnson Controls Airwall before 4.1.

**Is there a fix for CVE-2026-64887?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-64887 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-64887?** Check whether you run Johnson Controls Airwall at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is a use of hard-coded cryptographic key issue in Johnson Controls Airwall before version 4.1. Hard-coded keys are embedded in the firmware or software, making them discoverable through reverse engineering or public disclosure. This allows an attacker with network access to the Airwall device to perform cryptanalytic attacks, potentially decrypting sensitive communications or forging authentication tokens. The specific attack vector and preconditions depend on how the key is used in the system. No patch availability information is provided in the advisory.

## Affected products

- Johnson Controls Airwall before 4.1

## Timeline

- 2026-08-14: disclosed

## References

- [https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories](https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories)

## Related threats

- [Johnson Controls Airwall path traversal vulnerability](https://junglewise.ai/threats/cve-2026-34492-johnson-controls-airwall-path-traversal-vulnerability)