Resource Consumption Vulnerability in WebAssembly Wabt by WebAssembly
CVE-2025-6274

4.8MEDIUM

Key Information:

Vendor

Webassembly

Status
Wabt
Vendor
CVE Published:
19 June 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-6274?

A vulnerability exists in the OnDataCount function of the WebAssembly Wabt up to version 1.0.37, resulting in potential resource consumption issues. This flaw requires local access for exploitation and has gained public attention, although similar issues have faced scrutiny and may not affect real-world applications. Users of Wabt should be aware of this vulnerability and consider implementing mitigations as necessary.

Affected Version(s)

wabt 1.0.0

wabt 1.0.1

wabt 1.0.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-6274 - Proof of Concept

References

https://vuldb.com/?id.313278
vdb-entrytechnical-description
https://vuldb.com/?ctiid.313278
signaturepermissions-required
https://vuldb.com/?submit.593016
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

JJLeo (VulDB User)
.
CVE-2025-6274 : Resource Consumption Vulnerability in WebAssembly Wabt by WebAssembly