GHSA-c825-6ph3-4h84 · 深刻度： medium · エコシステム： maven — Apache ActiveMQ is Vulnerable to Integer Overflow or Wraparound
WARNING: Users of 6.x should upgrade to 6.2.4 or later as the fix was missed in previous 6.x releases. See the following for more details: https://activemq.apache.org/security-advisories.data/CVE-2026-40046-announcement.txt https://www.cve.org/CVERecord?id=CVE-2026-40046 Original Report: Apache ActiveMQ does not properly validate the remaining length field which may lead to an overflow during the decoding of malformed packets. When this integer overflow occurs, ActiveMQ may incorrectly compute the total Remaining Length and subsequently misinterpret the payload as multiple MQTT control packets which makes the broker susceptible to unexpected behavior when interacting with non-compliant clients. This behavior violates the MQTT v3.1.1 specification, which restricts Remaining Length to a maximum of 4 bytes. The scenario occurs on established connections after the authentication process. Brokers that are not enabling mqtt transport connectors are not impacted. This issue affects Apache ActiveMQ: before 5.19.2, 6.0.0 to 6.1.8, and 6.2.0 Users are recommended to upgrade to version 5.19.2, 6.1.9, or 6.2.1, which fixes the issue.
総合評価: CVE-2025-66168 は中リスク（40.1/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 0.78%、51 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 | 2026-06-15 | 0.07% | 0.78% | +0.71% |
| 2 | 2026-04-10 | 0.03% | 0.07% | +0.04% |
| 3 | 2026-03-21 | — | 0.03% | — |
EPSS の全履歴 （全 4 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 |
|---|---|---|---|---|---|---|
| 5.4 | 3.1 | MEDIUM |
|
2.8 | 2.5 | [email protected] |
| 8.8 | 3.1 | HIGH |
|
2.8 | 5.9 | [email protected] |
GHSA-c825-6ph3-4h84 · 深刻度： medium · エコシステム： maven — Apache ActiveMQ is Vulnerable to Integer Overflow or Wraparound
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2025-66168 not yet assigned priority: Debian including 1 source packages (activemq), 4 status rows across 4 suites (bookworm, bullseye, sid, trixie): open 4. | https://security-tracker.debian.org/tracker/CVE-2025-66168 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2025-66168 |
ubuntu
|
medium | CVE-2025-66168 medium priority: Ubuntu including 1 source packages (activemq), 8 status rows across 8 suites (bionic, focal, jammy, noble, questing, resolute, upstream, xenial): needs-triage 8. | https://ubuntu.com/security/CVE-2025-66168 |
| URL | タグ |
|---|---|
| https://activemq.apache.org/security-advisories.data/CVE-2026-40046-announcement.txt | |
| https://lists.apache.org/thread/13n8mkrb2jf2y6yyhpgrkmpqcm7djyto | Mailing List Vendor Advisory |
| https://www.cve.org/CVERecord?id=CVE-2026-40046 | |
| http://www.openwall.com/lists/oss-security/2026/03/03/5 | Mailing List Third Party Advisory |