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Vulnerability Instance

Lookup for vulnerabilities affecting packages.

Vulnerability_idVCID-bktu-qch2-5ugv
Summary
Apache ActiveMQ is Vulnerable to Integer Overflow or Wraparound
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.
Aliases
0
alias CVE-2025-66168
1
alias GHSA-c825-6ph3-4h84
Fixed_packages
0
url pkg:maven/org.apache.activemq/activemq-all@5.19.2
purl pkg:maven/org.apache.activemq/activemq-all@5.19.2
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.activemq/activemq-all@5.19.2
1
url pkg:maven/org.apache.activemq/activemq-all@6.2.1
purl pkg:maven/org.apache.activemq/activemq-all@6.2.1
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.activemq/activemq-all@6.2.1
2
url pkg:maven/org.apache.activemq/activemq-mqtt@5.19.2
purl pkg:maven/org.apache.activemq/activemq-mqtt@5.19.2
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.activemq/activemq-mqtt@5.19.2
3
url pkg:maven/org.apache.activemq/activemq-mqtt@6.2.1
purl pkg:maven/org.apache.activemq/activemq-mqtt@6.2.1
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.activemq/activemq-mqtt@6.2.1
4
url pkg:maven/org.apache.activemq/apache-activemq@5.19.2
purl pkg:maven/org.apache.activemq/apache-activemq@5.19.2
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.activemq/apache-activemq@5.19.2
5
url pkg:maven/org.apache.activemq/apache-activemq@6.2.1
purl pkg:maven/org.apache.activemq/apache-activemq@6.2.1
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.activemq/apache-activemq@6.2.1
Affected_packages
0
url pkg:maven/org.apache.activemq/activemq-all@6.0.0
purl pkg:maven/org.apache.activemq/activemq-all@6.0.0
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-bktu-qch2-5ugv
1
vulnerability VCID-ckcj-176v-6fcy
2
vulnerability VCID-cm77-qbk4-63ff
3
vulnerability VCID-qpr5-vxte-dqea
4
vulnerability VCID-tyaw-6dpw-mudm
resource_url http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.activemq/activemq-all@6.0.0
1
url pkg:maven/org.apache.activemq/activemq-all@6.2.0
purl pkg:maven/org.apache.activemq/activemq-all@6.2.0
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-bktu-qch2-5ugv
resource_url http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.activemq/activemq-all@6.2.0
2
url pkg:maven/org.apache.activemq/activemq-mqtt@6.0.0
purl pkg:maven/org.apache.activemq/activemq-mqtt@6.0.0
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-bktu-qch2-5ugv
1
vulnerability VCID-tyaw-6dpw-mudm
resource_url http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.activemq/activemq-mqtt@6.0.0
3
url pkg:maven/org.apache.activemq/activemq-mqtt@6.2.0
purl pkg:maven/org.apache.activemq/activemq-mqtt@6.2.0
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-bktu-qch2-5ugv
resource_url http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.activemq/activemq-mqtt@6.2.0
4
url pkg:maven/org.apache.activemq/apache-activemq@6.0.0
purl pkg:maven/org.apache.activemq/apache-activemq@6.0.0
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-bktu-qch2-5ugv
1
vulnerability VCID-cm77-qbk4-63ff
2
vulnerability VCID-tyaw-6dpw-mudm
3
vulnerability VCID-wema-7dnk-bkhy
resource_url http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.activemq/apache-activemq@6.0.0
5
url pkg:maven/org.apache.activemq/apache-activemq@6.2.0
purl pkg:maven/org.apache.activemq/apache-activemq@6.2.0
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-bktu-qch2-5ugv
resource_url http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.activemq/apache-activemq@6.2.0
References
0
reference_url https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-66168.json
reference_id
reference_type
scores
0
value 5.4
scoring_system cvssv3
scoring_elements CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
url https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-66168.json
1
reference_url https://api.first.org/data/v1/epss?cve=CVE-2025-66168
reference_id
reference_type
scores
0
value 0.00031
scoring_system epss
scoring_elements 0.08873
published_at 2026-04-02T12:55:00Z
1
value 0.00031
scoring_system epss
scoring_elements 0.08923
published_at 2026-04-04T12:55:00Z
2
value 0.00042
scoring_system epss
scoring_elements 0.12656
published_at 2026-04-07T12:55:00Z
3
value 0.00042
scoring_system epss
scoring_elements 0.12787
published_at 2026-04-09T12:55:00Z
4
value 0.00042
scoring_system epss
scoring_elements 0.12735
published_at 2026-04-08T12:55:00Z
5
value 0.00069
scoring_system epss
scoring_elements 0.21095
published_at 2026-04-21T12:55:00Z
6
value 0.00069
scoring_system epss
scoring_elements 0.21211
published_at 2026-04-11T12:55:00Z
7
value 0.00069
scoring_system epss
scoring_elements 0.21168
published_at 2026-04-12T12:55:00Z
8
value 0.00069
scoring_system epss
scoring_elements 0.21116
published_at 2026-04-13T12:55:00Z
9
value 0.00069
scoring_system epss
scoring_elements 0.21109
published_at 2026-04-16T12:55:00Z
10
value 0.00069
scoring_system epss
scoring_elements 0.21118
published_at 2026-04-18T12:55:00Z
url https://api.first.org/data/v1/epss?cve=CVE-2025-66168
2
reference_url https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-66168
reference_id
reference_type
scores
url https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-66168
3
reference_url https://github.com/apache/activemq
reference_id
reference_type
scores
0
value 5.4
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://github.com/apache/activemq
4
reference_url https://lists.apache.org/thread/13n8mkrb2jf2y6yyhpgrkmpqcm7djyto
reference_id
reference_type
scores
0
value 5.4
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
1
value MODERATE
scoring_system generic_textual
scoring_elements
2
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-03-04T20:27:42Z/
url https://lists.apache.org/thread/13n8mkrb2jf2y6yyhpgrkmpqcm7djyto
5
reference_url https://nvd.nist.gov/vuln/detail/CVE-2025-66168
reference_id
reference_type
scores
0
value 5.4
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://nvd.nist.gov/vuln/detail/CVE-2025-66168
6
reference_url http://www.openwall.com/lists/oss-security/2026/03/03/5
reference_id
reference_type
scores
0
value 5.4
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
1
value MODERATE
scoring_system generic_textual
scoring_elements
url http://www.openwall.com/lists/oss-security/2026/03/03/5
7
reference_url https://bugzilla.redhat.com/show_bug.cgi?id=2444356
reference_id 2444356
reference_type
scores
url https://bugzilla.redhat.com/show_bug.cgi?id=2444356
8
reference_url https://activemq.apache.org/security-advisories.data/CVE-2026-40046-announcement.txt
reference_id CVE-2026-40046-announcement.txt
reference_type
scores
0
value 5.4
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
1
value MODERATE
scoring_system generic_textual
scoring_elements
2
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-03-04T20:27:42Z/
url https://activemq.apache.org/security-advisories.data/CVE-2026-40046-announcement.txt
9
reference_url https://www.cve.org/CVERecord?id=CVE-2026-40046
reference_id CVERecord?id=CVE-2026-40046
reference_type
scores
0
value 5.4
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
1
value MODERATE
scoring_system generic_textual
scoring_elements
2
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-03-04T20:27:42Z/
url https://www.cve.org/CVERecord?id=CVE-2026-40046
10
reference_url https://github.com/advisories/GHSA-c825-6ph3-4h84
reference_id GHSA-c825-6ph3-4h84
reference_type
scores
0
value MODERATE
scoring_system cvssv3.1_qr
scoring_elements
url https://github.com/advisories/GHSA-c825-6ph3-4h84
Weaknesses
0
cwe_id 190
name Integer Overflow or Wraparound
description The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control.
1
cwe_id 130
name Improper Handling of Length Parameter Inconsistency
description The product parses a formatted message or structure, but it does not handle or incorrectly handles a length field that is inconsistent with the actual length of the associated data.
2
cwe_id 937
name OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
description Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2013.
3
cwe_id 1035
name OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
description Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2017.
Exploits
Severity_range_score4.0 - 6.9
Exploitability0.5
Weighted_severity6.2
Risk_score3.1
Resource_urlhttp://public2.vulnerablecode.io/vulnerabilities/VCID-bktu-qch2-5ugv