Netty: MQTT Topic Name and Client ID Validation Bypass
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| netty | netty | affected |
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No data.
No data.
| Vendor | Product | Versions | ||||||||||||
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| Netty | Netty |
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No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.174% probability within 30 days)
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| Metrics |
ssvc
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| First Time appeared |
Netty
Netty netty |
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| Vendors & Products |
Netty
Netty netty |
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| Description | Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.137.Final and 4.2.17.Final, MqttEncoder does not validate client identifiers, will topics, usernames, and PUBLISH topic names before encoding, allowing prohibited null bytes in MQTT UTF-8 string fields and potentially causing routing, access-control, or identity mismatches in downstream brokers. The vulnerability is exploitable when an application uses Netty's MQTT encoder to construct messages from user-controlled input. This issue is fixed in versions 4.1.137.Final and 4.2.17.Final. | |
| Title | Netty: MQTT Topic Name and Client ID Validation Bypass | |
| Weaknesses | CWE-20 CWE-626 |
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| References |
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| Metrics |
cvssV3_1
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