CVE-2025-43853 is a symlink following vulnerability affecting the WebAssembly Micro Runtime (WAMR) iwasm package, specifically versions up to and including 2.2.0, when run on Windows. An attacker with local access can create a symlink pointing outside a preopened directory, allowing them to create new files or read existing ones outside the WAMR sandbox. With a CVSS score of 5.5 (Medium), this vulnerability has a low attack complexity and requires local privileges, but can lead to high confidentiality impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 2.2.0CPE matchmatch criteria | cpe:2.3:a:bytecodealliance:webassembly_micro_runtime:*:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.