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CVE-2026-12343

IBM MQ Denial of Service PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
IBM / MQ Operatoraffected 3.2.0 through 3.2.29; affected 3.3.0 before 3.4.0; affected 3.4.1; affected 3.5.0; affected 3.5.1 through 3.5.3; affected 3.6.0 through 3.6.4; affected 3.7.0 through 3.7.2; affected 3.8.0; affected 3.8.1; affected 3.9.0; affected 3.9.1; affected 3.9.2; affected 4.0.0; affected 4.0.1; affected 4.0.2; affected 4.0.3; affected 4.0.4; affected 2.0.0 through 2.0.29
IBM / MQ Advanced container imagesaffected 9.4.0.6-r1 through 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 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 through 9.4.0.15-r4; affected 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 through 9.4.0.25-r3; affected 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 through 9.4.3.1-r3; affected 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 through 10.0.0.0-r4; affected 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 9.3.0.21-r3; affected 9.3.0.25-r1; affected 9.4.0.0-r1; affected 9.4.0.0-r2; affected 9.4.0.0-r3; affected 9.4.0.5-r1; affected 9.4.0.5-r2

CWE

CWE-400

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.