CVE-2025-58749 describes a vulnerability in WebAssembly Micro Runtime (WAMR) versions prior to 2.4.2, specifically affecting its LLVM-JIT mode. When executing WebAssembly programs with a memory.fill instruction where the memory address pointer is 2GiB or greater, the runtime will hang in release builds or crash in debug builds due to an invalid pointer access. This issue has a CVSS score of 5.3 (Medium), indicating a low impact on availability (A:L) with no confidentiality or integrity impact, and can be exploited remotely with low attack complexity (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L). There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 2.4.2CPE matchmatch criteria | cpe:2.3:a:bytecodealliance:webassembly_micro_runtime:*:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.