CVE-2025-15412A security vulnerability has been detected in WebAssembly wabt up to 1.0.39.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-119, CWE-125
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Oct 7, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
webassembly wabt webassembly:wabt | through 1.0.39 | NVD |
References
- https://github.com/WebAssembly/wabt/
- https://github.com/WebAssembly/wabt/issues/2678exploit, issue-tracking, vendor-advisory
- https://github.com/oneafter/1208/blob/main/af1exploit
- https://vuldb.com/?ctiid.339333permissions-required, vdb-entry
- https://vuldb.com/?id.339333third-party-advisory, vdb-entry
- https://vuldb.com/?submit.719826third-party-advisory, vdb-entry
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.