๐Ÿ›ก๏ธ CVE-2025-43853
๐ŸŸก CVSS 5.5 โ€” Medium โš ๏ธ Exploit Public CWE-61 NVD
5.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

The WebAssembly Micro Runtime's (WAMR) iwasm package is the executable binary built with WAMR VMcore which supports WebAssembly System Interface (WASI) and command line interface. Anyone running WAMR up to and including version 2.2.0 or WAMR built with libc-uvwasi on Windows is affected by a symlink following vulnerability. On WAMR running in Windows, creating a symlink pointing outside of the preopened directory and subsequently opening it with create flag will create a file on host outside of the sandbox. If the symlink points to an existing host file, it's also possible to open it and read its content. Version 2.3.0 fixes the issue.

Details

Severity MEDIUM
CVSS Score 5.5
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE CWE-61
Public Exploit โš ๏ธ Yes
Source NVD
Published 2025-05-15
Updated 2026-06-02
Modified 2025-09-19

Affected Packages

Software From version Fixed in
webassembly-micro-runtime โ€” 2.2.0

Similar Threats

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