rabbitmq: MQTT connection authentication succeeds with empty password
Published Dec 29, 2016
9.8
CRITICALCVSS 3.0
EPSS 1.39%
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.
Affected products
No data.
Configuration 1
- 3.0.0
- 3.0.1
- 3.0.2
- 3.0.3
- 3.0.4
- 3.1.0
- 3.1.1
- 3.1.2
- 3.1.3
- 3.1.4
- 3.1.5
- 3.2.0
- 3.2.1
- 3.2.2
- 3.2.3
- 3.2.4
- 3.3.0
- 3.3.1
- 3.3.2
- 3.3.3
- 3.3.4
- 3.3.5
- 3.4.0
- 3.4.1
- 3.4.2
- 3.4.3
- 3.4.4
- 3.5.0
- 3.5.1
- 3.5.2
- 3.5.3
- 3.5.6
- 3.5.4
- 3.5.5
- 3.5.7
- 3.6.0
- 3.6.1
- 3.6.2
- 3.6.3
- 3.6.4
- 3.6.5
Configuration 2
- 1.5.0
- 1.5.1
- 1.5.2
- 1.5.3
- 1.5.4
- 1.5.5
- 1.5.6
- 1.5.7
- 1.5.8
- 1.5.9
- 1.5.10
- 1.5.11
- 1.5.12
- 1.5.13
- 1.5.14
- 1.5.15
- 1.5.17
- 1.5.18
- 1.6.0
- 1.6.1
- 1.6.2
- 1.6.3
- 1.6.4
- 1.6.5
- 1.6.6
- 1.6.7
- 1.6.8
- 1.6.9
- 1.6.10
- 1.7.0
- 1.7.2
- 1.7.3
- 1.7.4
- 1.7.5
- 1.7.6
No data.
Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse)
rabbitmq-server
Will not fix
Red Hat Enterprise Linux OpenStack Platform 6 (Juno)
rabbitmq-server
Will not fix
Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)
rabbitmq-server
Will not fix
Red Hat OpenStack Platform 10 (Newton)
rabbitmq-server
Will not fix
Red Hat OpenStack Platform 11 (Ocata)
rabbitmq-server
Will not fix
Red Hat OpenStack Platform 8 (Liberty)
rabbitmq-server
Will not fix
Red Hat OpenStack Platform 9 (Mitaka)
rabbitmq-server
Will not fix
Red Hat Storage Console 2
rabbitmq-server
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse) | rabbitmq-server | Will not fix | n/a |
| Red Hat Enterprise Linux OpenStack Platform 6 (Juno) | rabbitmq-server | Will not fix | n/a |
| Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) | rabbitmq-server | Will not fix | n/a |
| Red Hat OpenStack Platform 10 (Newton) | rabbitmq-server | Will not fix | n/a |
| Red Hat OpenStack Platform 11 (Ocata) | rabbitmq-server | Will not fix | n/a |
| Red Hat OpenStack Platform 8 (Liberty) | rabbitmq-server | Will not fix | n/a |
| Red Hat OpenStack Platform 9 (Mitaka) | rabbitmq-server | Will not fix | n/a |
| Red Hat Storage Console 2 | rabbitmq-server | Will not fix | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.39% (0.01390) | 71.31th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.38% (0.01378) | 68.42th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.18% (0.00176) | 36.80th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.34% (0.00343) | 72.42th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.34% (0.00343) | 70.77th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.34% (0.00343) | 67.00th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.02% (0.01018) | 38.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.02% (0.01018) | 36.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
References (8)
- http://www.debian.org/security/2017/dsa-3761 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/bid/95065 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2016-9877 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1409748 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2016-9877
- https://pivotal.io/security/cve-2016-9877 x_refsource_CONFIRMMitigationVendor Advisory
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbst03880en_us x_refsource_CONFIRM
- https://www.cve.org/CVERecord?id=CVE-2016-9877
| Link | Providers | Tags |
|---|---|---|
| http://www.debian.org/security/2017/dsa-3761 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.securityfocus.com/bid/95065 | vdb-entryx_refsource_BID | |
| https://access.redhat.com/security/cve/CVE-2016-9877 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1409748 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2016-9877 | ||
| https://pivotal.io/security/cve-2016-9877 | x_refsource_CONFIRMMitigationVendor Advisory | |
| https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbst03880en_us | x_refsource_CONFIRM | |
| https://www.cve.org/CVERecord?id=CVE-2016-9877 |
Change history (0)
No recorded changes yet.