CVE-2025-15412

low-risk
Published 2026-01-01

A security vulnerability has been detected in WebAssembly wabt up to 1.0.39. This issue affects the function wabt::Decompiler::VarName of the file /src/repro/wabt/bin/wasm-decompile of the component wasm-decompile. Such manipulation leads to out-of-bounds read. Local access is required to approach this attack. The exploit has been disclosed publicly and may be used. Unfortunately, the project has no active maintainer at the moment. In a reply to the issue report somebody recommended to the researcher to provide a PR himself.

Do I need to act?

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0.03% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.3/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Wabt

Affected Vendors

Webassembly

References (6)

https://github.com/WebAssembly/wabt/
Exploit https://github.com/WebAssembly/wabt/issues/2678
Exploit https://github.com/oneafter/1208/blob/main/af1
Permissions Required https://vuldb.com/?ctiid.339333
Third Party Advisory https://vuldb.com/?id.339333
Third Party Advisory https://vuldb.com/?submit.719826
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal