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CVE-2026-12343

CVE-2026-12343 · IBM MQ Denial of Service

This page contains facts from public vulnerability sources. Check the original advisory before updating.

This page shows selected source facts. See the linked advisories for the complete description and affected versions.

IBM MQ could allow an authenticated attacker to cause a denial of service due to improper validation of RFH2 message header fields in queued publish/subscribe operations.

CVSS 6.5 · Medium · EPSS 0.2% · Fix available

Published
Updated

Affected products and versions

  • mq operator

    Versions
    • ≥ 3.2.0, ≤ 3.2.29: Affected (semver)
    • ≥ 3.3.0, < 3.4.0: Affected (semver)
    • 3.4.1: Affected (semver)
    • 3.5.0: Affected (semver)
    • ≥ 3.5.1, ≤ 3.5.3: Affected (semver)
    • ≥ 3.6.0, ≤ 3.6.4: Affected (semver)
    • ≥ 3.7.0, ≤ 3.7.2: Affected (semver)
    • 3.8.0: Affected (semver)
    • 3.8.1: Affected (semver)
    • 3.9.0: Affected (semver)
    • 3.9.1: Affected (semver)
    • 3.9.2: Affected (semver)
    • 4.0.0: Affected (semver)
    • 4.0.1: Affected (semver)
    • 4.0.2: Affected (semver)
    • 4.0.3: Affected (semver)
    • 4.0.4: Affected (semver)
    • ≥ 2.0.0, ≤ 2.0.29: Affected (semver)

    Update to 3.4.0

  • mq advanced container images

    Versions
    • ≥ 9.4.0.6-r1, ≤ r1, 9.4.0.6-r2, 9.4.0.7-r1, 9.4.0.10-r1, 9.4.0.10-r2, 9.4.0.11-r1, 9.4.0.11-r2, 9.4.0.11-r3, 9.4.0.12-r1, 9.4.0.15-r1 - 9.4.0.15-r4, 9.4.0.16-r1, 9.4.0.16-r2, 9.4.0.17-r1, 9.4.0.17-r2, 9.4.0.20-r1, 9.4.0.21-r1, 9.4.0.21-r2, 9.4.0.25-r1 - 9.4.0.25-r3, 9.4.0.26-r1CD: 9.4.1.0-r1, 9.4.1.0-r2, 9.4.1.1-r1, 9.4.2.0-r1, 9.4.2.0-r2, 9.4.2.1-r1, 9.4.2.1-r2, 9.4.3.0-r1, 9.4.3.0-r2, 9.4.3.1-r1 - 9.4.3.1-r3, 9.4.4.0-r1 - 9.4.4.0-r4, 9.4.4.1-r1, 9.4.5.0-r1, 9.4.5.0-r2, 9.4.5.1-r1, 10.0.0.0-r1 - 10.0.0.0-r4, 10.0.0.5-r1LTS: 9.3.0.0-r1, 9.3.0.0-r2, 9.3.0.0-r3, 9.3.0.1-r1, 9.3.0.1-r2, 9.3.0.1-r3, 9.3.0.1-r4, 9.3.0.3-r1, 9.3.0.4-r1, 9.3.0.4-r2, 9.3.0.5-r1, 9.3.0.5-r2, 9.3.0.5-r3, 9.3.0.6-r1, 9.3.0.10-r1, 9.3.0.10-r2, 9.3.0.11-r1,9.3.0.11-r2, 9.3.0.15-r1, 9.3.0.16-r1, 9.3.0.16-r2, 9.3.0.17-r1, 9.3.0.17-r2, 9.3.0.17-r3, 9.3.0.20-r1, 9.3.0.20-r2, 9.3.0.21-r1, 9.3.0.21-r2, 9.3.0.21-r3, 9.3.0.25-r1, 9.4.0.0-r1, 9.4.0.0-r2, 9.4.0.0-r3, 9.4.0.5-r1, 9.4.0.5-r2: Affected (semver)
    • 9.4.0.6-r2: Affected
    • 9.4.0.7-r1: Affected
    • 9.4.0.10-r1: Affected
    • 9.4.0.10-r2: Affected
    • 9.4.0.11-r1: Affected
    • 9.4.0.11-r2: Affected
    • 9.4.0.11-r3: Affected
    • 9.4.0.12-r1: Affected
    • ≥ 9.4.0.15-r1, ≤ 9.4.0.15-r4: Affected (custom)
    • 9.4.0.16-r1: Affected
    • 9.4.0.16-r2: Affected
    • 9.4.0.17-r1: Affected
    • 9.4.0.17-r2: Affected
    • 9.4.0.20-r1: Affected
    • 9.4.0.21-r1: Affected
    • 9.4.0.21-r2: Affected
    • ≥ 9.4.0.25-r1, ≤ 9.4.0.25-r3: Affected (custom)
    • 9.4.0.26-r1: Affected
    • 9.4.1.0-r1: Affected
    • 9.4.1.0-r2: Affected
    • 9.4.1.1-r1: Affected
    • 9.4.2.0-r1: Affected
    • 9.4.2.0-r2: Affected
    • 9.4.2.1-r1: Affected
    • 9.4.2.1-r2: Affected
    • 9.4.3.0-r1: Affected
    • 9.4.3.0-r2: Affected
    • ≥ 9.4.3.1-r1, ≤ 9.4.3.1-r3: Affected (custom)
    • 9.4.4.0-r1: Affected
    • 9.4.4.1-r1: Affected
    • 9.4.5.0-r1: Affected
    • 9.4.5.0-r2: Affected
    • 9.4.5.1-r1: Affected
    • ≥ 10.0.0.0-r1, ≤ 10.0.0.0-r4: Affected (custom)
    • 10.0.0.5-r1: Affected
    • 9.3.0.0-r1: Affected
    • 9.3.0.0-r2: Affected
    • 9.3.0.0-r3: Affected
    • 9.3.0.1-r1: Affected
    • 9.3.0.1-r2: Affected
    • 9.3.0.1-r3: Affected
    • 9.3.0.1-r4: Affected
    • 9.3.0.3-r1: Affected
    • 9.3.0.4-r1: Affected
    • 9.3.0.4-r2: Affected
    • 9.3.0.5-r1: Affected
    • 9.3.0.5-r2: Affected
    • 9.3.0.5-r3: Affected
    • 9.3.0.6-r1: Affected
    • 9.3.0.10-r1: Affected
    • 9.3.0.10-r2: Affected
    • 9.3.0.11-r1: Affected
    • 9.3.0.11-r2: Affected
    • 9.3.0.15-r1: Affected
    • 9.3.0.16-r1: Affected
    • 9.3.0.16-r2: Affected
    • 9.3.0.17-r1: Affected
    • 9.3.0.17-r2: Affected
    • 9.3.0.17-r3: Affected
    • 9.3.0.20-r1: Affected
    • 9.3.0.20-r2: Affected
    • 9.3.0.21-r1: Affected
    • 9.3.0.21-r2: Affected

    No fix published

Original sources

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