Vulnerability details
CVE-2026-44090
Phoenix Contact CHARX SEC-3000Phoenix Contact CHARX SEC-3050Phoenix Contact CHARX SEC-3100Phoenix Contact CHARX SEC-3150
Missing authentication for MQTT Broker
CVSS 4.0
9.3Critical
Official description
Due to missing authentication, an unauthenticated remote attacker may access the MQTT broker, which is only protected from external access by a firewall. This may lead to the device being fully compromised.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.3Critical | 4.0 | CVEProject cvelistV5 (CNA) (CERTVDE) | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| 9.8Critical | 3.1 | CVEProject cvelistV5 (CNA) (CERTVDE) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Phoenix Contact | CHARX SEC-3000 | 1.0.0 ≤ v < 1.9.1 | CVEProject cvelistV5 (CNA) |
| Phoenix Contact | CHARX SEC-3050 | 1.0.0 ≤ v < 1.9.1 | CVEProject cvelistV5 (CNA) |
| Phoenix Contact | CHARX SEC-3100 | 1.0.0 ≤ v < 1.9.1 | CVEProject cvelistV5 (CNA) |
| Phoenix Contact | CHARX SEC-3150 | 1.0.0 ≤ v < 1.9.1 | CVEProject cvelistV5 (CNA) |
References and advisories
1
Kolun on Telegram @kolunsec
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Details
- Published
- 2026-07-30
- Last updated
- 2026-07-30
- State
- Published
- Assigner (CNA)
- CERTVDE
Exploit prediction (EPSS)
0.74%
Probability of exploitation in 30 days
55%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-306Missing Authentication for Critical Function