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CVE-2026-11576

Quick assessment

Affected
Eclipse Foundation Eclipse ThreadX - NetX Duo
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.

Eclipse threadx netx duo是美国Eclipse基金会开源的一套嵌入式网络协议栈。 Eclipse ThreadX - NetX Duo 6.4.2版本及之前版本存在资源管理错误漏洞，该漏洞源于HTTP服务器PUT处理中错误修复导致未初始化文件句柄操作，可能导致未定义行为或内存损坏。

CVSS 7.5 · High EPSS 0.46% · P40

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Eclipse Foundation Eclipse ThreadX - NetX Duo 6.4.2≤ 6.5.0.202601 affected
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I. Basic Information for CVE-2026-11576

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The security fix for CVE-2025-0728 in eclipse-threadx NetX Duo refactors error handling in the HTTP server PUT process to use a shared cleanup label, but this unified cleanup path unconditionally calls fx_file_close() even when the file was never successfully opened. Multiple error branches jump to the shared cleanup label before any file open operation has occurred, causing fx_file_close() to operate on an uninitialized file handle, leading to undefined behavior, double-close issues, or memory corruption.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
双重释放
Source: CVE Program / CVE List V5
Vulnerability Title
Eclipse ThreadX - NetX Duo 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Eclipse threadx netx duo是美国Eclipse基金会开源的一套嵌入式网络协议栈。 Eclipse ThreadX - NetX Duo 6.4.2版本及之前版本存在资源管理错误漏洞，该漏洞源于HTTP服务器PUT处理中错误修复导致未初始化文件句柄操作，可能导致未定义行为或内存损坏。
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
Eclipse Foundation Eclipse ThreadX - NetX Duo 6.4.2 ~ 6.5.0.202601 -

II. Public POCs for CVE-2026-11576

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III. Intelligence Information for CVE-2026-11576

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Other References for CVE-2026-11576 (1)

IV. Related Vulnerabilities

Same product: Eclipse ThreadX - NetX Duo
Same vendor: Eclipse Foundation
Same weakness: CWE-415