CVE-2026-34499: CWE-321 Use of hard-coded cryptographic key in Johnson Controls ADVMS

This vulnerability (CVE-2026-34499) in Johnson Controls ADVMS is due to the use of a hard-coded cryptographic key (CWE-321). It affects versions from initial releases up to but not including 3.10. The flaw allows an attacker with local access and low privileges to read sensitive cryptographic constants embedded in the executable, potentially compromising cryptographic protections. The CVSS 4.0 vector indicates local attack vector, low attack complexity, no user interaction, and high impact on confidentiality, integrity, and availability.

An attacker with local access and low privileges can extract hard-coded cryptographic keys from the ADVMS executable, potentially enabling decryption of sensitive data or bypassing cryptographic protections. This compromises confidentiality and integrity of the system and may affect availability due to the high impact rating. No known exploits are reported in the wild at this time.

No official patch or remediation details are provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict local access to trusted users only to mitigate risk.