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CVE-2025-66627Published

Wasmi is a WebAssembly interpreter focused on constrained and embedded systems. In versions 0.41.0, 0.41.1, 0.42.0 through 0.47.1, 0.50.0 through 0.51.2 and 1.0.0, Wasmi's linear memory implementation leads to a Use After Free vulnerability…

Exact source revision recorded 25 Oct 2026 03:17:36 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

nvd · CVE-2025-66627

Published

Wasmi is a WebAssembly interpreter focused on constrained and embedded systems. In versions 0.41.0, 0.41.1, 0.42.0 through 0.47.1, 0.50.0 through 0.51.2 and 1.0.0, Wasmi's linear memory implementation leads to a Use After Free vulnerability, triggered by a WebAssembly module under certain memory growth conditions. This issue potentially leads to memory corruption, information disclosure, or code execution. This issue is fixed in versions 0.41.2, 0.47.1, 0.51.3 and 1.0.1. To workaround this issue, consider limiting the maximum linear memory sizes where feasible.

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Analyzed

Weakness classifications: CWE-416

Original publisher date fields

published: 2025-12-09T16:18:21.910

lastModified: 2026-10-14T21:10:00.183

2 source CPE criteria · context only
  • cpe:2.3:a:wasmi-labs:wasmi:*:*:*:*:*:rust:*:*
  • cpe:2.3:a:wasmi-labs:wasmi:1.0.0:*:*:*:*:rust:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

Source published
9 Dec 2025 16:18:21 UTC
Source modified
14 Oct 2026 21:10:00 UTC
Observed here
25 Oct 2026 03:17:36 UTC
Source terms
NIST NVD usage terms; underlying source attribution retained

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: nvd · NIST NVD usage terms; underlying source attribution retained. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 3.1 · [email protected] · Secondary · 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS 3.1 · [email protected] · Primary · 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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Sources read 9 Nov 22:23 UTC · 275 of 275 readable · 273 fully read · documentation 469/469 current

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