WebAssembly wabt Vulnerability in GetFuncOffset Function
CVE-2025-6275

4.8MEDIUM

Key Information:

Vendor

Webassembly

Status
Wabt
Vendor
CVE Published:
19 June 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-6275?

A vulnerability identified in the WebAssembly wabt product affects the GetFuncOffset function within the binary-reader-interp.cc file. This issue allows an attacker to exploit a use after free condition, potentially leading to unauthorized access or manipulation of memory. The attack can be executed locally, and exploit code has been publicly disclosed. There has been some controversy regarding the real-world applicability of this vulnerability, as a related issue was disputed by the code maintainer. However, the possibility of exploitation remains a concern for users of wabt.

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-2025-6275 - Proof of Concept

References

https://vuldb.com/?id.313279
vdb-entrytechnical-description
https://vuldb.com/?ctiid.313279
signaturepermissions-required
https://vuldb.com/?submit.593017
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-2025-6275 : WebAssembly wabt Vulnerability in GetFuncOffset Function