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Wasmtime segfault or unused out-of-sandbox load with `f64.copysign` operator on x86-64

🗓️ 26 Jan 2026 12:00:00Reported by rustsecType 
rustsec
 rustsec
🔗 rustsec.org👁 5 Views

Wasmtime advisory describing a segfault or unused out-of-sandbox load caused by f64.copysign on x86-64.

Related
Detection
Vulners
Node
bytecodealliancewasmtimeRange29.0.036.0.5rust
OR
bytecodealliancewasmtimeRange37.0.040.0.3rust
OR
bytecodealliancewasmtimeRange41.0.041.0.1rust

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30 Jan 2026 05:41Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.15.5
CVSS 44.1
EPSS0.00214
SSVC
5