Memory Corruption Vulnerability in wasm3 by WebAssembly
CVE-2025-15413

4.8MEDIUM

Key Information:

Vendor

wasm3

Status
Wasm3
Vendor
CVE Published:
1 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-15413?

The wasm3 WebAssembly interpreter is impacted by a memory corruption vulnerability in the functions op_SetSlot_i32 and op_CallIndirect, as defined in m3_exec.h. An attacker with local access can manipulate these functions leading to potential memory corruption. This vulnerability has been publicly disclosed, and exploits are available. Currently, the wasm3 project lacks an active maintainer, which may hinder timely remediation.

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Affected Version(s)

wasm3 0.1

wasm3 0.2

wasm3 0.3

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-2025-15413 - Proof of Concept

References

https://vuldb.com/?id.339334
vdb-entrytechnical-description
https://vuldb.com/?ctiid.339334
signaturepermissions-required
https://vuldb.com/?submit.719829
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
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

Oneafter (VulDB User)
JSON
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