Vulnerability · Published Jul 30, 2026 · Assigned by CERTVDE
CVE-2026-44091Creation of a new configuration by posting a malicious ID to MQTT
Critical 9.1
In plain English
A critical-severity security flaw in CHARX SEC-3000 from Phoenix Contact. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities).
Severity (CVSS 3.1)9.1Critical
Exploit odds (30 days)0.6%top 51.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
An unauthenticated remote attacker can post a malicious ID to the MQTT Broker results in the creation of a new configuration entry in the system configuration. This may lead to integrity and availability loss.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Phoenix Contact | CHARX SEC-3150 | 1.0.0 – before 1.9.1 |
| Phoenix Contact | CHARX SEC-3100 | 1.0.0 – before 1.9.1 |
| Phoenix Contact | CHARX SEC-3050 | 1.0.0 – before 1.9.1 |
| Phoenix Contact | CHARX SEC-3000 | 1.0.0 – before 1.9.1 |
Weakness: CWE-501 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H