High
binaryen — security advisory
A vulnerability was determined in WebAssembly Binaryen up to 125. Affected by this issue is the function WasmBinaryReader::readExport of the file src/wasm/wasm-binary.cpp. This manipulation causes heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been publicly disclosed and may be utilized. Patch name: 4f52bff8c4075b5630422f902dd92a0af2c9f398. It is recommended to apply a patch to fix this issue.
- Products
- binaryen
- Affected versions
- 105-1, 108-1, 120-3, 120-4, 120-4build1, 130-2, 130-3, 131-2, 89-1, 90-1, 91-1, 99-3
- Fixed versions
- Not specified
- CVEs
- CVE-2025-14956
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:31 UTC · Revision 1
Source evidence
A vulnerability was determined in WebAssembly Binaryen up to 125. Affected by this issue is the function WasmBinaryReader::readExport of the file src/wasm/wasm-binary.cpp. This manipulation causes heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been publicly disclosed and may be utilized. Patch name: 4f52bff8c4075b5630422f902dd92a0af2c9f398. It is recommended to apply a patch to fix this issue.
osv:UBUNTU-CVE-2025-14956
binaryen
Fixed versions: Not specified
binaryen
Fixed versions: Not specified
binaryen
Fixed versions: Not specified
binaryen
Fixed versions: Not specified
binaryen
Fixed versions: Not specified
binaryen
Fixed versions: Not specified
Complete source record
{
"id": "23482ecea109394fc2245ed5939f6a6279c3b3299c4116e3e050c10bbfb76107",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2025-14956",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2025-14956",
"summary": "A vulnerability was determined in WebAssembly Binaryen up to 125. Affected by this issue is the function WasmBinaryReader::readExport of the file src/wasm/wasm-binary.cpp. This manipulation causes heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been publicly disclosed and may be utilized. Patch name: 4f52bff8c4075b5630422f902dd92a0af2c9f398. It is recommended to apply a patch to fix this issue.",
"evidence": "osv:UBUNTU-CVE-2025-14956",
"products": [
{
"name": {
"value": "binaryen",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "89-1",
"evidence": "/affected/0/versions"
},
{
"value": "90-1",
"evidence": "/affected/0/versions"
},
{
"value": "91-1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "binaryen",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "99-3",
"evidence": "/affected/1/versions"
},
{
"value": "105-1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "binaryen",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "108-1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "binaryen",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "120-3",
"evidence": "/affected/3/versions"
},
{
"value": "120-4",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "binaryen",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "120-4build1",
"evidence": "/affected/4/versions"
},
{
"value": "130-2",
"evidence": "/affected/4/versions"
},
{
"value": "130-3",
"evidence": "/affected/4/versions"
},
{
"value": "131-2",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "binaryen",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "120-4",
"evidence": "/affected/5/versions"
},
{
"value": "120-4build1",
"evidence": "/affected/5/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2025-14956",
"aliases": [
"UBUNTU-CVE-2025-14956"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"
},
{
"type": "CVSS_V4",
"score": "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"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "binaryen",
"purl": "pkg:deb/ubuntu/binaryen?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"89-1",
"90-1",
"91-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-14956.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "binaryen",
"binary_version": "91-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "binaryen",
"purl": "pkg:deb/ubuntu/binaryen?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"99-3",
"105-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-14956.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "binaryen",
"binary_version": "105-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "binaryen",
"purl": "pkg:deb/ubuntu/binaryen?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"108-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-14956.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "binaryen",
"binary_version": "108-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "binaryen",
"purl": "pkg:deb/ubuntu/binaryen?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"120-3",
"120-4"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-14956.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "binaryen",
"binary_version": "120-4"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "binaryen",
"purl": "pkg:deb/ubuntu/binaryen?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"120-4build1",
"130-2",
"130-3",
"131-2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-14956.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "binaryen",
"binary_version": "131-2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "binaryen",
"purl": "pkg:deb/ubuntu/binaryen?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"120-4",
"120-4build1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-14956.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "binaryen",
"binary_version": "120-4build1"
}
]
}
}
],
"modified": "2026-10-17T12:57:01.091892818Z",
"provider": "osv",
"upstream": [
"CVE-2025-14956"
],
"references": [
"https://ubuntu.com/security/CVE-2025-14956",
"https://www.cve.org/CVERecord?id=CVE-2025-14956",
"https://github.com/WebAssembly/binaryen/issues/8089",
"https://github.com/WebAssembly/binaryen/pull/8092",
"https://github.com/WebAssembly/binaryen/commit/4f52bff8c4075b5630422f902dd92a0af2c9f398",
"https://github.com/oneafter/1204/blob/main/hbf",
"https://vuldb.com/?ctiid.337592",
"https://vuldb.com/?id.337592",
"https://vuldb.com/?submit.717315"
]
},
"related_cves": [
{
"value": "CVE-2025-14956",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 356641,
"published_at": "2025-12-19T17:15:00+00:00"
}