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CVE-2025-15412
WebAssembly wabt wasm-decompile VarName out-of-bounds
Medium4.8EPSS 0.21%
- Published
- Updated
- Reserved
- Assigned by
- VulDB
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| VulDBCNA (assigner) | 4.0 | Medium4.8 | CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P |
| VulDBCNA (assigner) | 3.1 | Medium5.3 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R |
| VulDBCNA (assigner) | 3.0 | Medium5.3 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R |
| VulDBCNA (assigner) | 2.0 | Medium4.3 | AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR |
| NVDNVD · Modified | 4.0 | Low1.9 | CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
- EPSS (exploitation in 30 days)
- 0.21% · top 89% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.8.
Weakness
Affected products
- affected 1.0.0
- affected 1.0.1
- affected 1.0.2
- affected 1.0.3
- affected 1.0.4
- affected 1.0.5
- affected 1.0.6
- affected 1.0.7
- affected 1.0.8
- affected 1.0.9
- affected 1.0.10
- affected 1.0.11
- affected 1.0.12
- affected 1.0.13
- affected 1.0.14
- affected 1.0.15
- affected 1.0.16
- affected 1.0.17
- affected 1.0.18
- affected 1.0.19
- affected 1.0.20
- affected 1.0.21
- affected 1.0.22
- affected 1.0.23
- affected 1.0.24
- affected 1.0.25
- affected 1.0.26
- affected 1.0.27
- affected 1.0.28
- affected 1.0.29
- affected 1.0.30
- affected 1.0.31
- affected 1.0.32
- affected 1.0.33
- affected 1.0.34
- affected 1.0.35
- affected 1.0.36
- affected 1.0.37
- affected 1.0.38
- affected 1.0.39
References (6)
- VDB-339333 | WebAssembly wabt wasm-decompile VarName out-of-bounds (opens in a new tab)vdb-entrytechnical-description
- VDB-339333 | CTI Indicators (IOB, IOC, IOA) (opens in a new tab)signaturepermissions-required
- Submit #719826 | WebAssembly wabt 1.0.39 and master-branch Memory Corruption (opens in a new tab)third-party-advisory
- https://github.com/WebAssembly/wabt/issues/2678 (opens in a new tab)issue-tracking
- https://github.com/oneafter/1208/blob/main/af1 (opens in a new tab)exploit
- https://github.com/WebAssembly/wabt/ (opens in a new tab)product
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2025-15412)Record last updated .