CVE-2026-12728

IBM MQ 9.1.0.0 through 9.1.0.37 LTS, 9.2.0.0 through 9.2.0.43 LTS, 9.3.0.0 through 9.3.0.41 LTS, 9.3.0.0 through 9.3.5.1 CD, 9.4.0.0 through 9.4.0.25 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 could allow an authenticated attacker to execute arbitrary code due to a deserialization of untrusted data.

  • Published Sep 15, 2026
  • CVSS 8.8 high
  • 0.4% chance of exploitation in the next 30 days (EPSS)

Affected software

CVE-2026-12728 at the National Vulnerability Database