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TI-2026-76834 Aliases CVE-2026-92449

Out-of-bounds write in Eclipse ThreadX GUIX binary resource loader

Priority LOW 31CWE-129Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Active
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
Low · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

The binary resource loader in Eclipse ThreadX GUIX, function _gx_binres_pixelmap_table_load(), indexes the pixelmap table with a map_id read from the theme file without checking it against the table size. A crafted theme writes up to roughly 256 KB past the end of the table. GUIX allocates that table itself through _gx_system_memory_allocator, so the overflow corrupts GUIX's own arena, and gx_binres_theme_load() takes no size parameter that callers could use to prevent it. The default configuration is affected, since GX_BINARY_RESOURCE_SUPPORT is enabled by default.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

`_gx_binres_pixelmap_table_load()` in the GUIX binary resource (theme) loader indexes the pixelmap table with a value read verbatim from the resource file and never bounds it against the table size. A crafted theme drives a write of up to roughly 256 KB past the end of the table. The overflowed buffer is allocated by GUIX itself, through `_gx_system_memory_allocator`, rather than supplied by the caller, so the loader corrupts its own arena. The public API `gx_binres_theme_load()` takes no size parameter, so no amount of caller diligence prevents this. Reproduces in the shipped default configuration; `GX_BINARY_RESOURCE_SUPPORT` is enabled by default.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00159 5th percentileScored 2026-11-07
Fix Fixed Eclipse ThreadX - GUIX (Eclipse Foundation): 6.5.2.202603

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Eclipse FoundationEclipse ThreadX - GUIX6.3.0 – 6.5.1.202602a6.5.2.202603Patch availableCNA
  • Eclipse ThreadX - GUIX VendorEclipse Foundation Affected 6.3.0 – 6.5.1.202602a Fixed in 6.5.2.202603 Patch available CNA

Remediation

Upgrade Eclipse ThreadX GUIX to 6.5.2.202603. Versions from 6.3.0 through 6.5.1.202602a are affected.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA Eclipse ThreadX - GUIX (Eclipse Foundation) Fixed in 6.5.2.202603

Timeline

  1. 2026-10-20 Threatist record created from CVE-2026-92449

References

Other 1

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  • TI-2026-13216 CWE-863: ABAC authorization bypass via trailing slash route normalization in Eclipse BaSyx Go Components CVSS 3.1CRITICAL 9.8
  • TI-2026-06514 Path traversal in Eclipse BaSyx CVSS 3.1CRITICAL 10.0
  • TI-2026-01382 In the Eclipse Theia Website repository, the GitHub Actions workflow… CVSS 3.1CRITICAL 10.0
  • TI-2026-74697 Authentication bypass in Eclipse Jetty EthereumAuthenticator CVSS 4.0CRITICAL 9.3
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Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences