EUVD-2026-71740
GHSA-747v-rwmr-3qwh
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Anonymous network access to an open MQTT broker allows reading all topics (C:H), publishing arbitrary messages (I:H), and disrupting message flow (A:H) with no privileges or interaction.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
4DescriptionCVE.org
No authentication exists in the MQTT service of Trueview 6.0.23.4. The MQTT broker accepts client connections on TCP port 1883 without requiring authentication, allowing a remote attacker with network access to establish an MQTT session and perform unauthorized publish or subscribe operations.
AnalysisAI
Missing authentication on the MQTT broker of CDAC's Trueview 6.0.23.4 lets any remote attacker with network reach to TCP port 1883 open an MQTT session and freely subscribe to or publish on all topics. Because the broker requires no credentials, an attacker can read every message flowing through the system and inject arbitrary messages, undermining the confidentiality and integrity of whatever data and control functions Trueview routes over MQTT. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The single required condition is network reachability to the Trueview 6.0.23.4 MQTT broker on TCP port 1883 - no credentials, user interaction, or non-default configuration are needed, since the broker accepts anonymous connections by design. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H = 9.8) and SSVC (Automatable: yes, Technical Impact: total) both point to a trivially reachable, fully unauthenticated network flaw - consistent with an open MQTT broker. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch or fixed version is identified in the available data at time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: immediately isolate the MQTT broker from untrusted networks by implementing firewall rules to restrict inbound access to TCP port 1883 to only authorized internal systems. …
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Same technique Authentication Bypass
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External POC / Exploit Code
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