CVE-2025-62711

Wasmtime is a runtime for WebAssembly. In versions from 38.0.0 to before 38.0.3, the implementation of component-model related host-to-wasm trampolines in Wasmtime contained a bug where it's possible to carefully craft a component, which when called in a specific way, would crash the host with a segfault or assert failure. Wasmtime 38.0.3 has been released and is patched to fix this issue. There are no workarounds.

CVSS v3 3.1 LOW

3.1^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.6 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/bytecodealliance/wasmtime/commit/192f2fcdadfec9d0cf6b58548a85a7307450cbf5	Patch
https://github.com/bytecodealliance/wasmtime/pull/11592	Patch
https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-4h67-722j-5pmc	Patch Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:rust:*:*

History

03 Nov 2025, 19:26

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 3.1
First Time		Bytecodealliance Bytecodealliance wasmtime
References	~~() https://github.com/bytecodealliance/wasmtime/commit/192f2fcdadfec9d0cf6b58548a85a7307450cbf5 -~~	() https://github.com/bytecodealliance/wasmtime/commit/192f2fcdadfec9d0cf6b58548a85a7307450cbf5 - Patch
References	~~() https://github.com/bytecodealliance/wasmtime/pull/11592 -~~	() https://github.com/bytecodealliance/wasmtime/pull/11592 - Patch
References	~~() https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-4h67-722j-5pmc -~~	() https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-4h67-722j-5pmc - Patch, Third Party Advisory
CPE		cpe:2.3:a:bytecodealliance:wasmtime::::::rust::*

24 Oct 2025, 22:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-10-24 22:15

Updated : 2025-11-03 19:26

NVD link : CVE-2025-62711

Mitre link : CVE-2025-62711

CVE.ORG link : CVE-2025-62711

JSON object : View

Products Affected

bytecodealliance

wasmtime

CWE

CWE-755

Improper Handling of Exceptional Conditions

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