CVE-2026-11831— IBM MQ Heap-based Buffer Overflow
Quick assessment
Affected
IBM MQ Operator
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 在处理特制的客户端请求时，可能因越界读取漏洞，允许已认证的攻击者引发有限的拒绝服务攻击，并获取极其有限的进程内存布局信息。
Possible ATT&CK Techniques 2 AI
T1499 · Endpoint Denial of Service T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 89
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| IBM | MQ Advanced container images | 9.4.0.6-r1≤ 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, 9.4.0.1 |
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 | ||
| … +63 more rows | |||
| IBM | MQ Operator | 3.2.0≤ 3.2.29 |
affected |
3.3.0< 3.4.0 |
affected | ||
3.4.1 |
affected | ||
3.5.0 |
affected | ||
3.5.1≤ 3.5.3 |
affected | ||
3.6.0≤ 3.6.4 |
affected | ||
3.7.0≤ 3.7.2 |
affected | ||
3.8.0 |
affected | ||
| … +10 more rows | |||
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I. Basic Information for CVE-2026-11831
Vulnerability Information
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Vulnerability Title
IBM MQ Heap-based Buffer Overflow
Source: CVE Program / CVE List V5
Vulnerability Description
IBM MQ could allow an authenticated attacker to cause a limited denial of service and obtain very limited information about process memory layout due to an out-of-bounds read when processing a specially crafted client request.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| IBM | MQ Operator | 3.2.0 ~ 3.2.29 | - |
|
| IBM | MQ Advanced container images | 9.4.0.6-r1 ~ 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. | - |
|
II. Public POCs for CVE-2026-11831
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Same Patch Batch · IBM · 2026-10-19 · 38 CVEs total
| CVE-2026-107400 | 8.8 HIGH | Security Vulnerability identified in IBM TRIRIGA - GWT Mock Authentication |
| CVE-2026-109126 | 8.8 HIGH | IBM Verify Identity Access and IBM Security Verify Access Hard-coded Credentials |
| CVE-2026-10572 | 8.8 HIGH | IBM MQ Buffer Overflow |
| CVE-2026-10574 | 8.8 HIGH | IBM MQ Buffer Overflow |
| CVE-2026-10743 | 8.8 HIGH | IBM MQ Race Condition |
| CVE-2026-105453 | 8.4 HIGH | IBM Sterling Connect:Direct for Unix Improper Privilege Management |
| CVE-2026-107366 | 8.3 HIGH | Langflow OSS Authorization Bypass Through User-Controlled Key |
| CVE-2026-12665 | 8.1 HIGH | IBM MQ Buffer Overflow |
| CVE-2026-6719 | 7.5 HIGH | IBM Concert Software Use of Insufficiently Random Values |
| CVE-2026-12148 | 7.5 HIGH | IBM MQ Deserialization of Untrusted Data |
| 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-2026-12155 | 6.5 MEDIUM | IBM MQ Deserialization of Untrusted Data |
| CVE-2026-12343 | 6.5 MEDIUM | IBM MQ Denial of Service |
| CVE-2026-11829 | 6.5 MEDIUM | IBM MQ Buffer Overflow |
| CVE-2026-12350 | 6.5 MEDIUM | IBM MQ Deserialization of Untrusted Data |
| CVE-2026-14511 | 6.5 MEDIUM | IBM MQ Denial of Service |
| 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 |
Showing top 20 of 38 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
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V. Comments for CVE-2026-11831
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