Eclipse ThreadX up to 6.5.1.202602a Binary Resource Loader gx_binres_theme_load/gx_binres_font_load buffer overflow

Summaryinfo

A vulnerability marked as very critical has been reported in Eclipse ThreadX up to 6.5.1.202602a. The impacted element is the function gx_binres_theme_load/gx_binres_font_load of the component Binary Resource Loader. The manipulation leads to buffer overflow. This vulnerability is referenced as CVE-2026-92446. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Eclipse ThreadX up to 6.5.1.202602a and classified as very critical. This issue affects the function gx_binres_theme_load/gx_binres_font_load of the component Binary Resource Loader. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

`gx_binres_theme_load()` and `gx_binres_font_load()` take the resource as a bare `GX_UBYTE *` with no length, and `GX_BINRES_DATA_INFO` has no field to carry one. Every read is therefore performed at an offset the file itself chose, against a buffer whose extent the loader does not know. A resource that declares more data than it contains is read past its end, and an offset stored in the file is turned into a pointer without being bounded. This is a distinct defect from GHSA-hgcj-22cg-4hfv, which was an underflowed glyph count. It needs no underflow and no wrapped multiply: a perfectly well-formed, narrow glyph range reaches it.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-92446 since 09/23/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/20/2026).

Upgrading to version 6.5.2.202603 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-105037). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Eclipse

Name

• ThreadX

Version

• 6.5.1.202602a

License

• open-source

CPE 2.3info

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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