HIGH

CVE-2026-12355

CVSS v3

8.1

HIGH

EPSS Score

0.4 %

exploit probability, as of 2026-09-28

CISA KEV

known exploited

Exploitation

—

SSVC status

Description

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 attacker to perform JNDI injection attacks due to insufficient input validation, potentially leading to information disclosure or remote code execution.

Technical details

Published: 2026-09-15
Last Modified: 2026-09-16

Frequently asked questions

What is CVE-2026-12355?

Is CVE-2026-12355 actively exploited?

Active exploitation of CVE-2026-12355 has not been confirmed. Its EPSS score was 0.4% on 2026-09-28, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-12355?

CVE-2026-12355 has a CVSS v3 base score of 8.1 (HIGH severity).

Is CVE-2026-12355 affecting your environment?

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