CVE-2025-15412

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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."}, {"lang": "es", "value": "Se ha detectado una vulnerabilidad de seguridad en WebAssembly wabt hasta la versi\u00f3n 1.0.39. Este problema afecta a la funci\u00f3n wabt::Decompiler::VarName del archivo /src/repro/wabt/bin/wasm-decompile del componente wasm-decompile. Dicha manipulaci\u00f3n conduce a una lectura fuera de l\u00edmites. Se requiere acceso local para llevar a cabo este ataque. El exploit ha sido divulgado p\u00fablicamente y puede ser utilizado. Desafortunadamente, el proyecto no tiene un mantenedor activo en este momento. En una respuesta al informe del problema, alguien recomend\u00f3 al investigador que enviara un PR \u00e9l mismo."}], "id": "CVE-2025-15412", "lastModified": "2026-10-07T11:10:00.153", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 4.3, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:L/AC:L/Au:S/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 3.1, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.4, "source": "cna@vuldb.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 1.9, "baseSeverity": "LOW", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "PROOF_OF_CONCEPT", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "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", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-15412", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-01-05T21:04:45.525921Z", "version": "2.0.3"}}]}, "published": "2026-01-01T21:15:41.067", "references": [{"source": "cna@vuldb.com", "url": "https://github.com/WebAssembly/wabt/"}, {"source": "cna@vuldb.com", "tags": ["Exploit", "Issue Tracking", "Vendor Advisory"], "url": "https://github.com/WebAssembly/wabt/issues/2678"}, {"source": "cna@vuldb.com", "tags": ["Exploit"], "url": "https://github.com/oneafter/1208/blob/main/af1"}, {"source": "cna@vuldb.com", "tags": ["Permissions Required", "VDB Entry"], "url": "https://vuldb.com/?ctiid.339333"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/?id.339333"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/?submit.719826"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}, {"lang": "en", "value": "CWE-125"}], "source": "cna@vuldb.com", "type": "Secondary"}]}

{"bugzilla": {"description": "wabt: wabt: Arbitrary code execution, information disclosure, and denial of service via out-of-bounds read", "id": "2426694", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2426694"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L", "status": "draft"}, "cwe": "(CWE-119|CWE-125)", "details": ["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.", "A flaw was found in wabt. A local user can exploit an out-of-bounds read vulnerability by manipulating the `wabt::Decompiler::VarName` function within the `wasm-decompile` component. This can lead to information disclosure, denial of service, and potentially arbitrary code execution."], "name": "CVE-2025-15412", "public_date": "2026-01-01T20:32:06Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-15412\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-15412\nhttps://github.com/WebAssembly/wabt/issues/2678\nhttps://github.com/oneafter/1208/blob/main/af1\nhttps://vuldb.com/?ctiid.339333\nhttps://vuldb.com/?id.339333\nhttps://vuldb.com/?submit.719826"], "statement": "This vulnerability is rated Moderate which exists in the `wasm-decompile` utility of the `wabt` package and requires local access to exploit. An attacker with local access could provide a specially crafted WebAssembly binary to the `wasm-decompile` tool, leading to an out-of-bounds read. This issue affects components like `wabt` in Fedora and `firefox`, `thunderbird` in Red Hat Enterprise Linux.", "threat_severity": "Moderate"}

{"created": "2026-01-05T10:14:24.133009+00:00", "updated": "2026-01-05T10:14:24.133035+00:00", "vendors": ["webassembly", "webassembly$PRODUCT$wabt"]}