SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAwaiting Analysis

CVE-2026-34499

Use of hard-coded cryptographic key vulnerability in Johnson Controls ADVMS allows Read Sensitive Constants Within an Executable.

HIGH 8.5EPSS 0.10%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.10%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Use of hard-coded cryptographic key vulnerability in Johnson Controls ADVMS allows Read Sensitive Constants Within an Executable. This issue affects ADVMS: before 3.10.

CVSS 4.0
8.5 HIGHCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS
0.10% probability · 1th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-321
Source
productsecurity@jci.com
EPSS trend
0%3%5%8 October 2026: 0.10%27 October 2026: 0.10%8 October 202627 October 2026

EPSS moved from 0.1% on 8 October 2026 to 0.1% on 27 October 2026.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.