WebAssembly wabt wasm-decompile VarName out-of-bounds
Summary
| CVE | CVE-2025-15412 |
|---|---|
| State | PUBLISHED |
| Assigner | VulDB |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-01-01 21:15:41 UTC |
| Updated | 2026-04-29 01:00:01 UTC |
| 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. |
Risk And Classification
Primary CVSS: v4.0 1.9 LOW from [email protected]
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
Problem Types: CWE-119 | CWE-125 | CWE-125 Out-of-Bounds Read | CWE-119 Memory Corruption
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | [email protected] | Secondary | 1.9 | LOW | 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/C... |
| 4.0 | CNA | DECLARED | 4.8 | MEDIUM | 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 |
| 3.1 | [email protected] | Primary | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | [email protected] | Secondary | 5.3 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L |
| 3.1 | CNA | DECLARED | 5.3 | MEDIUM | 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 |
| 3.0 | CNA | DECLARED | 5.3 | MEDIUM | 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 |
| 2.0 | [email protected] | Secondary | 4.3 | AV:L/AC:L/Au:S/C:P/I:P/A:P | |
| 2.0 | CNA | DECLARED | 4.3 | AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR |
CVSS v4.0 Breakdown
Attack Vector
LocalAttack Complexity
LowAttack Requirements
NonePrivileges Required
LowUser Interaction
NoneConfidentiality
LowIntegrity
LowAvailability
LowSub Conf.
NoneSub Integrity
NoneSub Availability
NoneCVSS: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
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v3.0 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
LowIntegrity
LowAvailability
LowCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Webassembly | Wabt | All | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | WebAssembly | Wabt | affected 1.0.0 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.1 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.2 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.3 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.4 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.5 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.6 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.7 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.8 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.9 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.10 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.11 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.12 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.13 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.14 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.15 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.16 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.17 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.18 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.19 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.20 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.21 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.22 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.23 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.24 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.25 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.26 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.27 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.28 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.29 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.30 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.31 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.32 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.33 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.34 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.35 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.36 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.37 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.38 | Not specified |
| CNA | WebAssembly | Wabt | affected 1.0.39 | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| vuldb.com | [email protected] | vuldb.com | Third Party Advisory, VDB Entry |
| vuldb.com | [email protected] | vuldb.com | Permissions Required, VDB Entry |
| github.com/oneafter/1208/blob/main/af1 | [email protected] | github.com | Exploit |
| github.com/WebAssembly/wabt | [email protected] | github.com | |
| github.com/WebAssembly/wabt/issues/2678 | [email protected] | github.com | Exploit, Issue Tracking, Vendor Advisory |
| vuldb.com | [email protected] | vuldb.com | Third Party Advisory, VDB Entry |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Oneafter (VulDB User) (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-01-01T00:00:00.000Z | Advisory disclosed |
| CNA | 2026-01-01T01:00:00.000Z | VulDB entry created |
| CNA | 2026-01-06T17:41:47.000Z | VulDB entry last update |
There are currently no legacy QID mappings associated with this CVE.