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CVE-2026-6721— Multiple Vulnerabilities in IBM Concert Software

Quick assessment

Affected
IBM Concert
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 Concert 1.0.0 至 3.0.0 版本存在漏洞，未经身份验证的远程攻击者可通过提供 specially crafted（特别构造）的输入，使其被嵌入到操作系统命令中，从而在底层系统上执行任意命令。成功利用该漏洞可使攻击者以受影响应用程序的权限执行远程代码。

CVSS 9.8 · Critical EPSS 1.45% · P72
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I. Basic Information for CVE-2026-6721

Vulnerability Information
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Vulnerability Title
Multiple Vulnerabilities in IBM Concert Software
Source: CVE Program / CVE List V5
Vulnerability Description
IBM Concert 1.0.0 through 3.0.0 allows an unauthenticated remote attacker can supply specially crafted input that is incorporated into OS commands, resulting in arbitrary command execution on the underlying system. Successful exploitation allows remote code execution with the privileges of the affected application.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
IBM Concert 1.0.0 ~ 3.0.0 cpe:2.3:a:ibm:concert:1.0.0:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-6721

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III. Intelligence Information for CVE-2026-6721

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Same Patch Batch · IBM · 2026-09-23 · 30 CVEs total

CVE-2026-6928 9.8 CRITICAL Multiple Vulnerabilities in IBM Concert Software
CVE-2026-6730 9.8 CRITICAL Multiple Vulnerabilities in IBM Concert Software
CVE-2026-18872 9.3 CRITICAL IBM Financial Transaction Manager (FTM) is Impacted by Multiple Vulnerabilities
CVE-2026-80423 8.8 HIGH DataStage on Cloud Pak for Data has several vulnerabilities
CVE-2026-80425 8.8 HIGH DataStage on Cloud Pak for Data has several vulnerabilities
CVE-2026-80412 8.8 HIGH DataStage on Cloud Pak for Data has several vulnerabilities
CVE-2026-80379 8.8 HIGH DataStage on Cloud Pak for Data has several vulnerabilities
CVE-2026-81537 8.8 HIGH DataStage on Cloud Pak for Data has several vulnerabilities
CVE-2026-18490 8.8 HIGH IBM Financial Transaction Manager (FTM) is Impacted by Multiple Vulnerabilities
CVE-2026-19179 8.2 HIGH IBM Financial Transaction Manager (FTM) is Impacted by Multiple Vulnerabilities
CVE-2026-18181 8.1 HIGH IBM Financial Transaction Manager (FTM) is Impacted by Multiple Vulnerabilities
CVE-2026-6935 7.8 HIGH Multiple Vulnerabilities in IBM Concert Software
CVE-2026-6794 7.8 HIGH Multiple Vulnerabilities in IBM Concert Software
CVE-2026-81536 7.7 HIGH DataStage on Cloud Pak for Data has several vulnerabilities
CVE-2026-81208 7.7 HIGH DataStage on Cloud Pak for Data has several vulnerabilities
CVE-2026-18184 7.4 HIGH IBM Financial Transaction Manager (FTM) is Impacted by Multiple Vulnerabilities
CVE-2026-18185 7.3 HIGH IBM Financial Transaction Manager (FTM) is Impacted by Multiple Vulnerabilities
CVE-2026-18875 7.3 HIGH IBM Financial Transaction Manager (FTM) is Impacted by Multiple Vulnerabilities
CVE-2026-18177 7.1 HIGH IBM Financial Transaction Manager (FTM) is Impacted by Multiple Vulnerabilities
CVE-2026-18180 6.5 MEDIUM IBM Financial Transaction Manager (FTM) is Impacted by Multiple Vulnerabilities

Showing top 20 of 30 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Concert
Same vendor: IBM
Same weakness: CWE-78

V. Comments for CVE-2026-6721

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