CVE-2026-92449— Binary resource loader: unbounded map_id from a theme file causes a heap out-of-bounds write in the GUIX-allocated arena
Quick assessment
Affected
Eclipse Foundation Eclipse ThreadX - GUIX
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.
GUIX 二进制资源（主题）加载器中的 函数，直接使用从资源文件中读取的原始值作为索引来访问像素映射表，且从未将该索引值与表的大小进行边界检查。攻击者可构造恶意主题文件，导致程序向该表末尾之外最多约 256 KB 的区域写入数据，从而引发缓冲区溢出。 该被溢出的缓冲区由 GUIX 自身通过 分配，而非由调用者提供，因此加载器实际上是在破坏其自身的内存分配区域（arena）。此外，公共 API 不接受任何尺寸参数，因此无论调用方如何谨慎，都无法防止此类漏洞的发生。 该漏洞在默认发布的配置中即可复现，因为 选项默认处于
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-92449
Vulnerability Information
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Vulnerability Title
Binary resource loader: unbounded map_id from a theme file causes a heap out-of-bounds write in the GUIX-allocated arena
Source: CVE Program / CVE List V5
Vulnerability Description
`_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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对数组索引的验证不恰当
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Eclipse Foundation | Eclipse ThreadX - GUIX | 6.3.0 ~ 6.5.1.202602a | - |
|
II. Public POCs for CVE-2026-92449
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2026-92449 (1)
Same Patch Batch · Eclipse Foundation · 2026-10-20 · 29 CVEs total
| CVE-2026-113620 | 9.8 CRITICAL | Eclipse ioFog operator WebSocket accepts an unverified JWT |
| CVE-2026-93475 | 9.3 CRITICAL | Out-of-bounds Write via an Unbounded RSA Modulus in NetX Secure X.509 |
| CVE-2026-94018 | 8.8 HIGH | NetX Duo Web HTTP server releases an uninitialized packet pointer on the PUT Content-Lengt |
| CVE-2026-92853 | 8.7 HIGH | Out-of-bounds Read via a Zero-length TLS 1.3 Certificate Message in NetX Secure |
| CVE-2026-92843 | 8.7 HIGH | Out-of-bounds Read via the TLS 1.3 Certificate extensions_length in NetX Secure |
| CVE-2026-95109 | 8.5 HIGH | Cortex-A7 module data validation checks only the first address of a caller-supplied range |
| CVE-2026-94192 | 8.5 HIGH | Module object deallocation can free a live ThreadX kernel object |
| CVE-2026-91186 | 8.4 HIGH | PNG decoder: a duplicate IHDR chunk after IDAT resizes the image after allocation, causing |
| CVE-2026-91041 | 7.8 HIGH | FileX fault-tolerant log replay writes past the destination sector when mounting a crafted |
| CVE-2026-113619 | 7.5 HIGH | Eclipse ioFog renders request templates before authentication |
| CVE-2026-91189 | 7.1 HIGH | GUIX binary resource loader: unvalidated glyph range causes an integer underflow and a hea |
| CVE-2026-95107 | 7.0 HIGH | Module object allocation size overflow corrupts the manager object pool |
| CVE-2026-93003 | 6.9 MEDIUM | NetX Duo Web HTTP server interprets request body content as HTTP header fields |
| CVE-2026-108062 | 6.9 MEDIUM | Pre-authentication OIDC discovery and JWKS fetches run synchronously on the asyncio event |
| CVE-2026-94023 | 6.9 MEDIUM | Module delete dispatchers do not enforce kernel-object ownership before irreversible delet |
| CVE-2026-94024 | 6.9 MEDIUM | Module Manager object lookup validates one byte of a module's search name |
| CVE-2026-91059 | 6.8 MEDIUM | JPEG decoder: a duplicate SOF0 after SOS publishes a pixelmap that misreports its own allo |
| CVE-2026-92446 | 6.8 MEDIUM | GUIX binary resource loader reads past the end of a resource, because no length for it eve |
| CVE-2026-95108 | 6.8 MEDIUM | Deleting a user-mode module thread leaks its privileged kernel stack |
| CVE-2026-97400 | 6.8 MEDIUM | jdmpview / DTFJ reads arbitrary local files and makes arbitrary outbound requests when ope |
Showing top 20 of 29 CVEs. View all on vendor page → →
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V. Comments for CVE-2026-92449
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