CVE-2026-12356

HIGH
MEDIUM Priority: 0.03 BB Relevance: 55/100
Published: 2026-11-04 Modified: 2026-11-06 First seen: 2026-11-04 Status: active

Attack Surface

Network No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: High
PR: Low
UI: None
S: Unchanged
C: High
I: High
A: High

Description

IBM MQ 9.2.0.0 through 9.2.0.44 LTS, 9.3.0.0 through 9.3.0.42 LTS, 9.4.0.0 through 9.4.0.26 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 through 10.0.0.5 LTS and CD could allow an authenticated user with command queue access to execute arbitrary code by injecting malicious arguments into Ant script commands.

Affected Software (15)

VendorProductVersion
IBM MQ 9.2.0.0
IBM MQ 9.3.0.0
IBM MQ 9.4.0.0
IBM MQ 9.4.0.0
IBM MQ 10.0.0.0
IBM MQ 9.2.0.0
IBM MQ 9.3.0.0
IBM MQ 9.4.0.0
IBM MQ 9.4.0.0
IBM MQ 10.0.0.0
IBM MQ 9.2.0.0
IBM MQ 9.3.0.0
IBM MQ 9.4.0.0
IBM MQ 9.4.0.0
IBM MQ 10.0.0.0

References & Advisories (1)

Bug Bounty Relevance

55 / 100
✓ Network accessible
✓ No user interaction

CVSS Score

7.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.34%
Raw Score 0.003420
Percentile 28.2%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00342
2026-11-13
0.00342
2026-11-12
0.00342
2026-11-10
0.00342
2026-11-09
0.00342
2026-11-08
0.00342
2026-11-07
0.00342
2026-11-06
0.00342
2026-11-05
0.00342

Intelligence Sources

mitre ref →
nvd ref →