High severity · published Jun 19, 2026
CVE-2026-11576
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…
7.5
CVSS
0.5%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 40% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ET
Eclipse ThreadX - NetX Duo · Eclipse Foundation
6.4.2 through 6.5.0.202601 · source: vendor
TN
Threadx Netx Duo · Eclipse
6.4.2 through 6.5.0.202601 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-11576
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-11576
Broken Link
https://gitlab.eclipse.org/security/cve-assignment/-/work_items/123
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