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CVE-2025-6272— wasm3 m3_compile.c MarkSlotAllocated out-of-bounds write

Quick assessment

Affected
n/a wasm3
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.

Wasm3是Wasm3开源的一个快速的WebAssembly解释器和最通用的WASM运行时。 Wasm3 0.5.0版本存在缓冲区错误漏洞，该漏洞源于文件source/m3_compile.c中函数MarkSlotAllocated存在越界写入。

CVSS 3.3 · Low EPSS 0.23% · P13

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2025-6272

Vulnerability Information
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Vulnerability Title
wasm3 m3_compile.c MarkSlotAllocated out-of-bounds write
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability has been found in wasm3 0.5.0 and classified as problematic. This vulnerability affects the function MarkSlotAllocated of the file source/m3_compile.c. The manipulation leads to out-of-bounds write. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Vulnerability Title
Wasm3 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Wasm3是Wasm3开源的一个快速的WebAssembly解释器和最通用的WASM运行时。 Wasm3 0.5.0版本存在缓冲区错误漏洞，该漏洞源于文件source/m3_compile.c中函数MarkSlotAllocated存在越界写入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- wasm3 0.5.0 -

II. Public POCs for CVE-2025-6272

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III. Intelligence Information for CVE-2025-6272

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Other References for CVE-2025-6272 (1)

Other References for CVE-2025-6272 (1)

Same Patch Batch · n/a · 2025-06-19 · 6 CVEs total

CVE-2025-6279 5.5 MEDIUM Upsonic Pickle add_tool cloudpickle.loads deserialization
CVE-2025-6278 5.5 MEDIUM Upsonic server.py os.path.join path traversal
CVE-2025-6270 5.3 MEDIUM HDF5 H5FSsection.c H5FS__sect_find_node heap-based overflow
CVE-2025-6269 5.3 MEDIUM HDF5 H5Cimage.c H5C__reconstruct_cache_entry heap-based overflow
CVE-2025-6271 3.3 LOW swftools wav2swf wav.c wav_convert2mono out-of-bounds

IV. Related Vulnerabilities

Same product: wasm3
Same vendor: n/a
Same weakness: CWE-787

V. Comments for CVE-2025-6272

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