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Servers and applications

CVE-2016-9877

An issue was discovered in Pivotal RabbitMQ 3.x before 3.5.8 and 3.6.x before 3.6.6 and RabbitMQ for PCF 1.5.x before 1.5.20, 1.6.x before 1.6.12, and 1.7.x before 1.7.7. MQTT (MQ Telemetry Transport) connection authentication with a username/password pair succeeds if an existing username is provided but the password is omitted from the connection request. Connections that use TLS with a…

Severity
Critical 9.8
Published
29 Dec 2016
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
1.4% in the next 30 daysHigher than 72% of CVEs. EPSS by FIRST, 11 Nov 2026
Weakness
Improper access control (CWE-284)
Attack
Over the network · No login needed · No user action needed
Attacker can
Read data · Change data · Take it down
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Sources
NVD

Description

An issue was discovered in Pivotal RabbitMQ 3.x before 3.5.8 and 3.6.x before 3.6.6 and RabbitMQ for PCF 1.5.x before 1.5.20, 1.6.x before 1.6.12, and 1.7.x before 1.7.7. MQTT (MQ Telemetry Transport) connection authentication with a username/password pair succeeds if an existing username is provided but the password is omitted from the connection request. Connections that use TLS with a client-provided certificate are not affected.

From NVD.

Affected software

SoftwareAffected versions
RabbitMQServers and applications · cpe:a:broadcom:rabbitmq_server
  • Version 3.5.6
  • Version 3.5.3
  • Version 3.5.2
  • Version 3.5.1
All 32 release lines
  • Version 3.0.0
  • Version 3.0.1
  • Version 3.0.2
  • Version 3.0.3
  • Version 3.0.4
  • Version 3.1.0
  • Version 3.1.1
  • Version 3.1.2
  • Version 3.1.3
  • Version 3.1.4
  • Version 3.1.5
  • Version 3.2.0
  • Version 3.2.1
  • Version 3.2.2
  • Version 3.2.3
  • Version 3.2.4
  • Version 3.3.0
  • Version 3.3.1
  • Version 3.3.2
  • Version 3.3.3
  • Version 3.3.4
  • Version 3.3.5
  • Version 3.4.0
  • Version 3.4.1
  • Version 3.4.2
  • Version 3.4.3
  • Version 3.4.4
  • Version 3.5.0
  • Version 3.5.1
  • Version 3.5.2
  • Version 3.5.3
  • Version 3.5.6

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2016-9877
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2016-9877