CVE-2025-6274 MEDIUM

CVE-2025-6274: WebAssembly wabt binary-reader-interp.cc OnDataCount resource consumption

Vendor Webassembly
Product wabt
Weakness CWE-400
Published June 19, 2025
Last update June 23, 2025

CVSS base score

4.8/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

A vulnerability was found in WebAssembly wabt up to 1.0.37. It has been classified as problematic. Affected is the function OnDataCount of the file src/interp/binary-reader-interp.cc. The manipulation leads to resource consumption. Attacking locally is a requirement. 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.

Key dates

02Disclosure timeline

June 19, 2025 CVE published
June 23, 2025 Record updated