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Vulnerability record · CVE-2026-11576 · published 19 June 2026

CVE-2026-11576: Eclipse threadx netx duo double free vulnerability

Eclipse · Threadx Netx Duo

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.

7.5 CVSS 3.1 High EPSS 0.46% · top 62.6% CWE-415 · Double freeCWE-459 · CWE-459
7.5CVSS 3.1 base score
0.46%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
2 Jul 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://gitlab.eclipse.org/security/cve-assignment/-/work_items/123 Broken Link

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2024-2452Eclipse threadx netx duo classic buffer overflow vulnerabilityIn Eclipse ThreadX NetX Duo before 6.4.0, if an attacker can control parameters of __portable_aligned_alloc() could cause an integer wrap-around and …EPSS 0.90%8.8CVE-2025-55085Eclipse threadx netx duo out-of-bounds read vulnerabilityIn NextX Duo before 6.4.4, in the HTTP client module, the network support code for Eclipse Foundation ThreadX, the parsing of HTTP header fields was …EPSS 0.61%8.7CVE-2025-55102Eclipse threadx netx duo uncontrolled resource consumption vulnerabilityA denial-of-service vulnerability exists in the NetX IPv6 component functionality of Eclipse ThreadX NetX Duo. A specially crafted network packet of …EPSS 0.40%7.1CVE-2025-2260Eclipse threadx netx duo vulnerabilityIn NetX HTTP server functionality of Eclipse ThreadX NetX Duo before version 6.4.3, an attacker can cause a denial of service by specially crafted pa…EPSS 0.95%7.1CVE-2025-0726Eclipse threadx netx duo vulnerabilityIn NetX HTTP server functionality of Eclipse ThreadX NetX Duo before version 6.4.2, an attacker can cause a denial of service by specially crafted pa…EPSS 0.76%6.9CVE-2025-55094Eclipse threadx netx duo out-of-bounds read vulnerabilityIn NetX Duo before 6.4.4, the networking support module for Eclipse Foundation ThreadX, there was a potential out of bound read issue in _nx_icmpv6_v…EPSS 0.41%6.9CVE-2025-55092Eclipse threadx netx duo out-of-bounds read vulnerabilityIn Eclipse Foundation NetX Duo before 6.4.4, the networking support module for Eclipse Foundation ThreadX, there was a potential out of bound read is…EPSS 0.33%6.9CVE-2025-55093Eclipse threadx netx duo out-of-bounds read vulnerabilityIn NetX Duo before 6.4.4, the networking support module for Eclipse Foundation ThreadX, there was a potential out of bound read issue in _nx_ipv4_pac…EPSS 0.31%

Source: NIST National Vulnerability Database (record CVE-2026-11576), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.