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CVE-2025-6275— WebAssembly wabt binary-reader-interp.cc GetFuncOffset use after free

Quick assessment

Affected
WebAssembly wabt
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.

WebAssembly wabt是WebAssembly开源的一个WebAssembly二进制工具包。 WebAssembly wabt 1.0.37及之前版本存在资源管理错误漏洞，该漏洞源于文件src/interp/binary-reader-interp.cc中函数GetFuncOffset存在释放后重用。

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-2025-6275

Vulnerability Information
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Vulnerability Title
WebAssembly wabt binary-reader-interp.cc GetFuncOffset use after free
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in WebAssembly wabt up to 1.0.37. It has been declared as problematic. Affected by this vulnerability is the function GetFuncOffset of the file src/interp/binary-reader-interp.cc. The manipulation leads to use after free. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. A similar issue reported during the same timeframe was disputed by the code maintainer because it might not affect "real world wasm programs". Therefore, this entry might get disputed as well in the future.
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
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
WebAssembly wabt 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WebAssembly wabt是WebAssembly开源的一个WebAssembly二进制工具包。 WebAssembly wabt 1.0.37及之前版本存在资源管理错误漏洞，该漏洞源于文件src/interp/binary-reader-interp.cc中函数GetFuncOffset存在释放后重用。
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
WebAssembly wabt 1.0.0 -

II. Public POCs for CVE-2025-6275

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III. Intelligence Information for CVE-2025-6275

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Other References for CVE-2025-6275 (1)

Same Patch Batch · WebAssembly · 2025-06-19 · 3 CVEs total

CVE-2025-6274 3.3 LOW WebAssembly wabt binary-reader-interp.cc OnDataCount resource consumption
CVE-2025-6273 3.3 LOW WebAssembly wabt binary-reader-objdump.cc LogOpcode assertion

IV. Related Vulnerabilities

Same product: wabt
Same vendor: WebAssembly
Same weakness: CWE-416

V. Comments for CVE-2025-6275

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