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CVE-2026-86093— IBM® Db2® federated server could allow an attacker with the ability to control or impersonate a DRDA server endpoint to execute arbitrary commands under certain conditions

Quick assessment

Affected

IBM Db2

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 DB2是美国IBM公司的一款企业级关系型数据库管理系统。 IBM DB2 11.5.0至11.5.9版本和12.1.0至12.1.5版本存在缓冲区错误漏洞，该漏洞源于栈缓冲区溢出，未进行边界检查将用户可控数据复制到固定大小的栈缓冲区，可能导致能够控制或模拟 DRDA 服务器端点的攻击者在 Db2 客户端上执行任意命令。

CVSS 7.5 · High EPSS 0.45% · P39 Updated Sep 12, 2026

Possible ATT&CK Techniques 2 AI

T1190 · Exploit Public-Facing Application T1210 · Exploitation of Remote Services

Affected Version Matrix 2

Vendor	Product	Version Range	Status
IBM	Db2	`11.5.0≤ 11.5.9`	affected
		`12.1.0≤ 12.1.5`	affected

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I. Basic Information for CVE-2026-86093

Vulnerability Information

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Vulnerability Title

IBM® Db2® federated server could allow an attacker with the ability to control or impersonate a DRDA server endpoint to execute arbitrary commands under certain conditions

Source: CVE Program / CVE List V5

Vulnerability Description

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.5 could allow an attacker with the ability to control or impersonate a DRDA server endpoint to execute arbitrary commands on Db2 clients due to a stack-based buffer overflow that improperly copies user-controlled data into a fixed-size stack buffer without bounds checking.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Source: CVE Program / CVE List V5

Vulnerability Type

栈缓冲区溢出

Source: CVE Program / CVE List V5

Vulnerability Title

IBM DB2 缓冲区错误漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
IBM	Db2	11.5.0 ~ 11.5.9	`cpe:2.3:a:ibm:db2:11.5.0:::::::*`

II. Public POCs for CVE-2026-86093

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-86093

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Vendor Advisories for CVE-2026-86093 (1)

🔗 Security Bulletin: IBM® Db2® federated server could allow an attacker with the ability to control or impersonate a DRDA server endpoint to execute arbitrary commands under certain conditions (CVE-2026-86093) Read full article vendor-advisory patch

https://www.cve.org/CVERecord?id=CVE-2026-86093

Same Patch Batch · IBM · 2026-09-10 · 49 CVEs total

CVE-2026-81204	9.8 CRITICAL	Langflow is vulnerable to arbitrary code execution due to multiple incomplete code securit
CVE-2026-79724	9.8 CRITICAL	Langflow is vulnerable to arbitrary code execution due to multiple incomplete code securit
CVE-2026-85025	9.8 CRITICAL	Langflow is vulnerable to arbitrary code execution due to multiple incomplete code securit
CVE-2026-78573	9.8 CRITICAL	IBM ContextForge MCP Gateway is affected by use of default credentials
CVE-2026-82107	9.6 CRITICAL	DataStage on Cloud Pak for Data has several vulnerabilities due to open source software
CVE-2026-82100	9.6 CRITICAL	DataStage on Cloud Pak for Data has several vulnerabilities due to open source software
CVE-2026-80424	9.1 CRITICAL	DataStage on Cloud Pak for Data has several vulnerabilities due to open source software
CVE-2026-19646	9.1 CRITICAL	Multiple vulnerabilities affect IBM License Key Server Administration and Reporting Tool a
CVE-2026-81211	8.8 HIGH	Langflow is vulnerable to arbitrary code execution due to multiple incomplete code securit
CVE-2026-81941	8.8 HIGH	Langflow is vulnerable to arbitrary code execution due to multiple incomplete code securit
CVE-2026-81554	8.8 HIGH	DataStage on Cloud Pak for Data has several vulnerabilities due to open source software
CVE-2026-81550	8.8 HIGH	DataStage on Cloud Pak for Data has several vulnerabilities due to open source software
CVE-2026-81551	8.8 HIGH	DataStage on Cloud Pak for Data has several vulnerabilities due to open source software
CVE-2026-82095	8.8 HIGH	DataStage on Cloud Pak for Data has several vulnerabilities due to open source software
CVE-2026-82099	8.8 HIGH	DataStage on Cloud Pak for Data has several vulnerabilities due to open source software
CVE-2026-82098	8.8 HIGH	DataStage on Cloud Pak for Data has several vulnerabilities due to open source software
CVE-2026-82097	8.8 HIGH	DataStage on Cloud Pak for Data has several vulnerabilities due to open source software
CVE-2026-78569	8.8 HIGH	Langflow is vulnerable to arbitrary code execution due to multiple incomplete code securit
CVE-2026-82092	8.8 HIGH	DataStage on Cloud Pak for Data has several vulnerabilities due to open source software
CVE-2026-81940	8.8 HIGH	Langflow is vulnerable to arbitrary code execution due to multiple incomplete code securit

Showing top 20 of 49 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Db2

Same vendor: IBM

Same weakness: CWE-121