Medium severity · published Nov 25, 2025
CVE-2025-64704
WebAssembly Micro Runtime vulnerable to a segmentation fault in v128.store instruction
5.5
CVSS
0.2%
EPSS
No
On KEV
Description
WebAssembly Micro Runtime (WAMR) is a lightweight standalone WebAssembly (Wasm) runtime. Prior to version 2.4.4, WAMR is susceptible to a segmentation fault in v128.store instruction. This issue has been patched in version 2.4.4.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 10% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WA
wasm-micro-runtime · bytecodealliance
< 2.4.4 · source: vendor
WM
Webassembly Micro Runtime · Bytecodealliance
before 2.4.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-64704
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-64704
Release Notes
https://github.com/bytecodealliance/wasm-micro-runtime/releases/tag/WAMR-2.4.4
Exploit
https://github.com/bytecodealliance/wasm-micro-runtime/security/advisories/GHSA-2f2p-wf5w-82qr
More from wasm-micro-runtime
7.4
CVE-2025-64713
WebAssembly Micro Runtime frame_offset_bottom array bounds overflow in fast Interpreter mode when handling GET_GLOBAL(I32) followed by if opcode