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CVE-2026-14511— IBM MQ Denial of Service

Quick assessment

Affected
IBM MQ
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

IBM MQ 9.4.5.0 至 9.4.5.1 版本中，经过身份验证的用户可通过发送特制消息，导致消费应用程序崩溃，从而引发拒绝服务（DoS）攻击。

CVSS 6.5 · Medium

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
IBM MQ 9.4.5.0≤ 9.4.5.1 affected
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I. Basic Information for CVE-2026-14511

Vulnerability Information
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Vulnerability Title
IBM MQ Denial of Service
Source: CVE Program / CVE List V5
Vulnerability Description
IBM MQ 9.4.5.0 through 9.4.5.1 could allow an authenticated user to cause a denial of service by sending a specially crafted message that crashes consuming applications.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
IBM MQ 9.4.5.0 ~ 9.4.5.1 cpe:2.3:a:ibm:mq:9.4.5.0:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-14511

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III. Intelligence Information for CVE-2026-14511

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Other References for CVE-2026-14511 (1)

Same Patch Batch · IBM · 2026-10-19 · 33 CVEs total

CVE-2026-10743 8.8 HIGH IBM MQ Race Condition
CVE-2026-10574 8.8 HIGH IBM MQ Buffer Overflow
CVE-2026-10572 8.8 HIGH IBM MQ Buffer Overflow
CVE-2026-12665 8.1 HIGH IBM MQ Buffer Overflow
CVE-2026-12148 7.5 HIGH IBM MQ Deserialization of Untrusted Data
CVE-2026-6719 7.5 HIGH IBM Concert Software Use of Insufficiently Random Values
CVE-2026-3295 7.4 HIGH IBM Cloud Pak System Cross-Site Scripting
CVE-2026-19178 6.8 MEDIUM TS4500 Tape Library Race Condition
CVE-2026-12343 6.5 MEDIUM IBM MQ Denial of Service
CVE-2026-11829 6.5 MEDIUM IBM MQ Buffer Overflow
CVE-2026-12155 6.5 MEDIUM IBM MQ Deserialization of Untrusted Data
CVE-2026-12350 6.5 MEDIUM IBM MQ Deserialization of Untrusted Data
CVE-2025-36061 6.5 MEDIUM TS4500 Tape Library Denial of Service
CVE-2025-36252 6.3 MEDIUM TS4500 Tape Library Insufficient Session Expiration
CVE-2026-4413 6.1 MEDIUM IBM Concert Software Cross-Site Scripting
CVE-2023-38375 6.1 MEDIUM IBM Cloud Pak System Cross-Site Scripting
CVE-2026-3161 5.9 MEDIUM IBM Cloud Pak System Risky Cryptographic Algorithm
CVE-2026-11828 5.9 MEDIUM IBM MQ Buffer Overflow
CVE-2025-36069 5.5 MEDIUM TS4500 Tape Library Insufficient Session Expiration
CVE-2026-4418 5.4 MEDIUM IBM Cloud Pak System HTML Injection

Showing top 20 of 33 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: MQ
Same vendor: IBM
Same weakness: CWE-770

V. Comments for CVE-2026-14511

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