What’s Vulnerable › Vulnerabilities

CVE-2019-11777

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-09-11 · updated 2026-06-17
• Weakness: CWE-346

Description

In the Eclipse Paho Java client library version 1.2.0, when connecting to an MQTT server using TLS and setting a host name verifier, the result of that verification is not checked. This could allow one MQTT server to impersonate another and provide the client library with incorrect information.

Affected products

• The Eclipse Foundation Eclipse Paho: 1.2.0

References

• https://bugs.eclipse.org/bugs/show_bug.cgi?id=549934
• https://bugs.eclipse.org/bugs/show_bug.cgi?id=549934

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