wasm3 up to 0.5.0 NewCodePage memory leak

Summaryinfo

A vulnerability, which was classified as problematic, was found in wasm3 up to 0.5.0. The impacted element is the function NewCodePage. The manipulation results in memory leak. This vulnerability is cataloged as CVE-2025-15572. The attack must be initiated from a local position. Furthermore, there is an exploit available. Unfortunately, the project has no active maintainer at the moment.

Detailsinfo

A vulnerability classified as problematic has been found in wasm3 up to 0.5.0. Affected is the function NewCodePage. The manipulation with an unknown input leads to a memory leak vulnerability. CWE is classifying the issue as CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. This is going to have an impact on availability.

The weakness was shared 12/13/2025 as 550. The advisory is available at github.com. This vulnerability is traded as CVE-2025-15572. The exploitability is told to be easy. Local access is required to approach this attack. Technical details and a public exploit are known.

The exploit is shared for download at github.com. It is declared as proof-of-concept. Unfortunately, the project has no active maintainer at the moment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Name

• wasm3

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5.0

Website

• Product: https://github.com/wasm3/wasm3/

CPE 2.3info

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CPE 2.2info

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Submitinfo

Accepted

• Submit #752765: wasm3 main branch Resource Consumption (by Oneafter)

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