Untrusted Pointer Dereference Affecting bytecodealliance/wasm-micro-runtime package, versions [,2.4.2)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-BYTECODEALLIANCEWASMMICRORUNTIME-12863313
- published18 Sept 2025
- disclosed16 Sept 2025
- creditLiu Jia, gaaraw
Introduced: 16 Sep 2025
NewCVE-2025-58749 (opens in a new tab)How to fix?
Upgrade bytecodealliance/wasm-micro-runtime to version 2.4.2 or higher.
Overview
Affected versions of this package are vulnerable to Untrusted Pointer Dereference in the memory.fill process when the first operand (memory address pointer) is greater than or equal to 2147483648 bytes in LLVM-JIT mode. An attacker can cause the runtime to hang or crash by executing a WebAssembly program with a specially crafted memory.fill instruction. This is only exploitable if the runtime is operating in LLVM-JIT mode; the issue does not occur in FAST-JIT mode or other runtime tools.