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.
総合評価: CVE-2016-9877 は中リスク（53.8/100）。CVSS 深刻度は重大。悪用される可能性が高い（EPSS 0.20%、42 パーセンタイル） 推奨対応: 影響資産を整理し、修補計画に組み込んでください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置（高いほど相対的に深刻）を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ（新 − 旧） |
|---|---|---|---|---|
| 1 | 2026-05-31 | 0.33% | 0.20% | -0.13% |
| 2 | 2025-07-30 | 0.40% | 0.33% | -0.07% |
| 3 | 2025-04-03 | — | 0.40% | — |
EPSS の全履歴 （全 9 件）
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 9.8 | 3.0 | CRITICAL |
|
3.9 | 5.9 | [email protected] |
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2016-9877 not yet assigned priority: Debian including 1 source packages (rabbitmq-server), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2016-9877 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2016-9877 |
suse
|
high | CVE-2016-9877 severity important: SUSE including 30 source package names (erlang-rabbitmq-client, erlang-rabbitmq-client-3.13.7-160000.2.2, …), 32 product×package rows across 8 product lines (SUSE Enterprise Storage 2.1, SUSE Enterprise Storage 4, … (8 product lines)): Fixed 27, Known Not Affected 5. | https://www.suse.com/security/cve/CVE-2016-9877/ |
ubuntu
|
high | CVE-2016-9877 high priority: Ubuntu including 1 source packages (rabbitmq-server), 6 status rows across 6 suites (precise, trusty, upstream, xenial, yakkety, zesty): released 3, ignored 2, not-affected 1. | https://ubuntu.com/security/CVE-2016-9877 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| broadcom | rabbitmq_server | 3.0.0 | cpe:2.3:a:broadcom:rabbitmq_server:3.0.0:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.0.1 | cpe:2.3:a:broadcom:rabbitmq_server:3.0.1:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.0.2 | cpe:2.3:a:broadcom:rabbitmq_server:3.0.2:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.0.3 | cpe:2.3:a:broadcom:rabbitmq_server:3.0.3:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.0.4 | cpe:2.3:a:broadcom:rabbitmq_server:3.0.4:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.1.0 | cpe:2.3:a:broadcom:rabbitmq_server:3.1.0:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.1.1 | cpe:2.3:a:broadcom:rabbitmq_server:3.1.1:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.1.2 | cpe:2.3:a:broadcom:rabbitmq_server:3.1.2:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.1.3 | cpe:2.3:a:broadcom:rabbitmq_server:3.1.3:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.1.4 | cpe:2.3:a:broadcom:rabbitmq_server:3.1.4:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.1.5 | cpe:2.3:a:broadcom:rabbitmq_server:3.1.5:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.2.0 | cpe:2.3:a:broadcom:rabbitmq_server:3.2.0:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.2.1 | cpe:2.3:a:broadcom:rabbitmq_server:3.2.1:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.2.2 | cpe:2.3:a:broadcom:rabbitmq_server:3.2.2:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.2.3 | cpe:2.3:a:broadcom:rabbitmq_server:3.2.3:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.2.4 | cpe:2.3:a:broadcom:rabbitmq_server:3.2.4:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.3.0 | cpe:2.3:a:broadcom:rabbitmq_server:3.3.0:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.3.1 | cpe:2.3:a:broadcom:rabbitmq_server:3.3.1:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.3.2 | cpe:2.3:a:broadcom:rabbitmq_server:3.3.2:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.3.3 | cpe:2.3:a:broadcom:rabbitmq_server:3.3.3:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.3.4 | cpe:2.3:a:broadcom:rabbitmq_server:3.3.4:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.3.5 | cpe:2.3:a:broadcom:rabbitmq_server:3.3.5:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.4.0 | cpe:2.3:a:broadcom:rabbitmq_server:3.4.0:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.4.1 | cpe:2.3:a:broadcom:rabbitmq_server:3.4.1:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.4.2 | cpe:2.3:a:broadcom:rabbitmq_server:3.4.2:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.4.3 | cpe:2.3:a:broadcom:rabbitmq_server:3.4.3:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.4.4 | cpe:2.3:a:broadcom:rabbitmq_server:3.4.4:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.5.0 | cpe:2.3:a:broadcom:rabbitmq_server:3.5.0:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.5.1 | cpe:2.3:a:broadcom:rabbitmq_server:3.5.1:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.5.2 | cpe:2.3:a:broadcom:rabbitmq_server:3.5.2:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.5.3 | cpe:2.3:a:broadcom:rabbitmq_server:3.5.3:*:*:*:*:*:*:* |
| broadcom | rabbitmq_server | 3.5.6 | cpe:2.3:a:broadcom:rabbitmq_server:3.5.6:*:*:*:*:*:*:* |
| pivotal_software | rabbitmq | 3.5.4 | cpe:2.3:a:pivotal_software:rabbitmq:3.5.4:*:*:*:*:*:*:* |
| pivotal_software | rabbitmq | 3.5.5 | cpe:2.3:a:pivotal_software:rabbitmq:3.5.5:*:*:*:*:*:*:* |
| pivotal_software | rabbitmq | 3.5.7 | cpe:2.3:a:pivotal_software:rabbitmq:3.5.7:*:*:*:*:*:*:* |
| pivotal_software | rabbitmq | 3.6.0 | cpe:2.3:a:pivotal_software:rabbitmq:3.6.0:*:*:*:*:*:*:* |
| pivotal_software | rabbitmq | 3.6.1 | cpe:2.3:a:pivotal_software:rabbitmq:3.6.1:*:*:*:*:*:*:* |
| pivotal_software | rabbitmq | 3.6.2 | cpe:2.3:a:pivotal_software:rabbitmq:3.6.2:*:*:*:*:*:*:* |
| pivotal_software | rabbitmq | 3.6.3 | cpe:2.3:a:pivotal_software:rabbitmq:3.6.3:*:*:*:*:*:*:* |
| pivotal_software | rabbitmq | 3.6.4 | cpe:2.3:a:pivotal_software:rabbitmq:3.6.4:*:*:*:*:*:*:* |
| pivotal_software | rabbitmq | 3.6.5 | cpe:2.3:a:pivotal_software:rabbitmq:3.6.5:*:*:*:*:*:*:* |
| pivotal_software | rabbitmq | 1.5.0 | cpe:2.3:a:pivotal_software:rabbitmq:1.5.0:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.5.1 | cpe:2.3:a:pivotal_software:rabbitmq:1.5.1:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.5.2 | cpe:2.3:a:pivotal_software:rabbitmq:1.5.2:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.5.3 | cpe:2.3:a:pivotal_software:rabbitmq:1.5.3:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.5.4 | cpe:2.3:a:pivotal_software:rabbitmq:1.5.4:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.5.5 | cpe:2.3:a:pivotal_software:rabbitmq:1.5.5:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.5.6 | cpe:2.3:a:pivotal_software:rabbitmq:1.5.6:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.5.7 | cpe:2.3:a:pivotal_software:rabbitmq:1.5.7:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.5.8 | cpe:2.3:a:pivotal_software:rabbitmq:1.5.8:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.5.9 | cpe:2.3:a:pivotal_software:rabbitmq:1.5.9:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.5.10 | cpe:2.3:a:pivotal_software:rabbitmq:1.5.10:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.5.11 | cpe:2.3:a:pivotal_software:rabbitmq:1.5.11:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.5.12 | cpe:2.3:a:pivotal_software:rabbitmq:1.5.12:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.5.13 | cpe:2.3:a:pivotal_software:rabbitmq:1.5.13:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.5.14 | cpe:2.3:a:pivotal_software:rabbitmq:1.5.14:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.5.15 | cpe:2.3:a:pivotal_software:rabbitmq:1.5.15:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.5.17 | cpe:2.3:a:pivotal_software:rabbitmq:1.5.17:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.5.18 | cpe:2.3:a:pivotal_software:rabbitmq:1.5.18:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.6.0 | cpe:2.3:a:pivotal_software:rabbitmq:1.6.0:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.6.1 | cpe:2.3:a:pivotal_software:rabbitmq:1.6.1:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.6.2 | cpe:2.3:a:pivotal_software:rabbitmq:1.6.2:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.6.3 | cpe:2.3:a:pivotal_software:rabbitmq:1.6.3:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.6.4 | cpe:2.3:a:pivotal_software:rabbitmq:1.6.4:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.6.5 | cpe:2.3:a:pivotal_software:rabbitmq:1.6.5:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.6.6 | cpe:2.3:a:pivotal_software:rabbitmq:1.6.6:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.6.7 | cpe:2.3:a:pivotal_software:rabbitmq:1.6.7:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.6.8 | cpe:2.3:a:pivotal_software:rabbitmq:1.6.8:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.6.9 | cpe:2.3:a:pivotal_software:rabbitmq:1.6.9:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.6.10 | cpe:2.3:a:pivotal_software:rabbitmq:1.6.10:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.7.0 | cpe:2.3:a:pivotal_software:rabbitmq:1.7.0:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.7.2 | cpe:2.3:a:pivotal_software:rabbitmq:1.7.2:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.7.3 | cpe:2.3:a:pivotal_software:rabbitmq:1.7.3:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.7.4 | cpe:2.3:a:pivotal_software:rabbitmq:1.7.4:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.7.5 | cpe:2.3:a:pivotal_software:rabbitmq:1.7.5:*:*:*:*:pivotal_cloud_foundry:*:* |
| pivotal_software | rabbitmq | 1.7.6 | cpe:2.3:a:pivotal_software:rabbitmq:1.7.6:*:*:*:*:pivotal_cloud_foundry:*:* |