CVE-2025-58749 - CVE House

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Status published Low CVE-2025-58749

WAMR runtime hangs or crashes with large memory.fill addresses in LLVM-JIT mode

2.1 CVSS

Vulnerability Description

WebAssembly Micro Runtime (WAMR) is a lightweight standalone WebAssembly (Wasm) runtime. In WAMR versions prior to 2.4.2, when running in LLVM-JIT mode, the runtime cannot exit normally when executing WebAssembly programs containing a memory.fill instruction where the first operand (memory address pointer) is greater than or equal to 2147483648 bytes (2GiB). This causes the runtime to hang in release builds or crash in debug builds due to accessing an invalid pointer. The issue does not occur in FAST-JIT mode or other runtime tools. This has been fixed in version 2.4.2.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

More from bytecodealliance

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Affected Vendor

bytecodealliance

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Affected Software

wasm-micro-runtime

Vulnerable Versions:

< 2.4.2

Timeline

Official Publish: September 16th, 2025

Last Modified: September 16th, 2025

Added to House: July 22nd, 2026

CVSS Vectors

Weaknesses (CWE)

CWE-822 CWE-190

MITRE ATT&CK TTPs

T1203 Exploitation for Client Execution

T1068 Exploitation for Privilege Escalation

Privilege Escalation

T1055 Process Injection

Defense Evasion

T1190 Exploit Public-Facing Application

T1105 Ingress Tool Transfer

Command and Control

T1499 Endpoint Denial of Service