CVE-2025-6274

LOW

WebAssembly wabt < 1.0.37 - Uncontrolled Resource Consumption in OnDataCount Function

Title source: llm

Description

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.

References (5)

Core 5

Core References

Third Party Advisory, VDB Entry vdb-entry technical-description

https://vuldb.com/?id.313278

Permissions Required, Third Party Advisory, VDB Entry signature permissions-required

https://vuldb.com/?ctiid.313278

Third Party Advisory, VDB Entry third-party-advisory

https://vuldb.com/?submit.593016

Exploit, Issue Tracking issue-tracking

https://github.com/WebAssembly/wabt/issues/2598

Exploit exploit

https://github.com/user-attachments/files/20191325/wabt_crash_4.txt

Scores

CVSS v3 3.3

EPSS 0.0018

EPSS Percentile 8.1%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact partial

Details

CWE

CWE-400 CWE-404

Status published

Products (1)

webassembly/wabt < 1.0.37

Published Jun 19, 2025

Tracked Since Feb 18, 2026