Improper Handling of Exceptional Conditions Affecting wasmtime-environ package, versions >=38.0.0 <38.0.3
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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- published27 Oct 2025
- disclosed24 Oct 2025
- creditUnknown
Introduced: 24 Oct 2025
NewCVE-2025-62711 (opens in a new tab)How to fix?
Upgrade wasmtime-environ to version 38.0.3 or higher.
Overview
wasmtime-environ is a Standalone environment support for WebAssembly code in Cranelift
Affected versions of this package are vulnerable to Improper Handling of Exceptional Conditions via the implementation of component-model related host-to-wasm trampolines. An attacker can cause the host to crash with a segmentation fault or assertion failure by crafting a component and invoking it in a specific manner that abuses the setjmp and longjmp functions in C.
Note: Only embeddings that use or invoke functions with specific component type signatures may be affected.