{"id":"CVE-2025-14956","aliases":["ALPINE-CVE-2025-14956","DEBIAN-CVE-2025-14956","EUVD-2025-204567","GHSA-vjgx-vcpf-hm6w","JLSEC-2026-1092","UBUNTU-CVE-2025-14956","openSUSE-SU-2026:11915-1"],"status":"published","title":"WebAssembly Binaryen wasm-binary.cpp readExport heap-based overflow","description":"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.","severity":{"version":"4.0","score":4.8,"vector":"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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00215,"percentile":0.12056,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-119","CWE-122","CWE-125"],"published":"2025-12-19T16:32:12Z","modified":"2026-11-03T21:00:06Z","fixes":[{"ecosystem":"Alpine:v3.24","package":"binaryen","fixed_in":["129-r0"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"binaryen","fixed_in":["130-2"],"sources":["osv"]},{"ecosystem":"Julia","package":"Binaryen_jll","fixed_in":["0.130.0+0"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.24","package":"binaryen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"129-r0"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"binaryen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["108-1","112-1","116-1","120-1","120-2","120-3","120-4","120-4+ports","122-1.1","122-2","122-3","130-1","130-2","130-3","131-1","131-2"]},{"source":"osv","ecosystem":"Debian:13","package":"binaryen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["120-4","120-4+ports","122-1.1","122-2","122-3","130-1","130-2","130-3","131-1","131-2"]},{"source":"osv","ecosystem":"Debian:14","package":"binaryen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"130-2"}]}],"versions":["120-4","120-4+ports","122-1.1","122-2","122-3","130-1"]},{"source":"osv","ecosystem":"Julia","package":"Binaryen_jll","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.130.0+0"}]}]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"binaryen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["89-1","90-1","91-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"binaryen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["99-3","105-1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"binaryen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["108-1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"binaryen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["120-3","120-4"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"binaryen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["120-4build1","130-2","130-3","131-2"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"binaryen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["120-4","120-4build1"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"binaryen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"133-1.1"}]}],"bundled":3}],"products":[{"vendor":"webassembly","product":"binaryen"}],"references":[{"url":"https://vuldb.com/?id.337592","tags":["vdb-entry","technical-description","Third Party Advisory","VDB Entry","advisory","web","report"]},{"url":"https://vuldb.com/?ctiid.337592","tags":["signature","permissions-required","Permissions Required","VDB Entry","report","web"]},{"url":"https://vuldb.com/?submit.717315","tags":["third-party-advisory","Exploit","Third Party Advisory","VDB Entry","advisory","web","report"]},{"url":"https://github.com/WebAssembly/binaryen/issues/8089","tags":["issue-tracking","Exploit","Issue Tracking","Third Party Advisory","report","web"]},{"url":"https://github.com/WebAssembly/binaryen/pull/8092","tags":["issue-tracking","Issue Tracking","report","web"]},{"url":"https://github.com/oneafter/1204/blob/main/hbf","tags":["exploit","Not Applicable","evidence","web","report"]},{"url":"https://github.com/WebAssembly/binaryen/commit/4f52bff8c4075b5630422f902dd92a0af2c9f398","tags":["patch","Patch","fix","web","report"]},{"url":"https://github.com/WebAssembly/binaryen/","tags":["product","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-14956","tags":["advisory","web"]},{"url":"https://github.com/WebAssembly/binaryen","tags":["web"]},{"url":"https://github.com/advisories/GHSA-vjgx-vcpf-hm6w","tags":["web"]},{"url":"https://security.alpinelinux.org/vuln/CVE-2025-14956","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/14xxx/CVE-2025-14956.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2025-14956","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2025-14956","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-14956","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2025-14956","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-14957","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-8257","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2025-14956","title":"WebAssembly Binaryen wasm-binary.cpp readExport heap-based overflow","description":"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.","status":"published","published":"2025-12-19T16:32:12.536Z","modified":"2026-02-24T05:57:29.961Z","cvss":[{"version":"4.0","score":4.8,"vector":"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","level":"medium","assessor":"cna"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C","level":"medium","assessor":"cna"},{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C","level":"medium","assessor":"cna"},{"version":"2.0","score":4.3,"vector":"AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C","assessor":"cna"}],"cwes":["CWE-122","CWE-119"],"updated_at":"2026-11-02T14:32:28.621398Z"}],"euvd":[{"id":"EUVD-2025-204567","description":"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.","status":"published","published":"2025-12-19T16:32:12Z","modified":"2026-02-24T05:57:29Z","cvss":[{"version":"4.0","score":4.8,"vector":"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","level":"medium"}],"updated_at":"2026-11-02T19:48:31.660571Z"}],"ghsa":[{"id":"GHSA-vjgx-vcpf-hm6w","title":"A vulnerability was determined in WebAssembly Binaryen up to 125. Affected by this issue is the...","description":"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.","status":"published","published":"2025-12-19T18:31:18Z","modified":"2026-02-24T06:31:36Z","cvss":[{"version":"4.0","score":1.9,"vector":"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","level":"low"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-119","CWE-125"],"updated_at":"2026-11-02T15:06:21.035092Z"}],"nvd":[{"id":"CVE-2025-14956","description":"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.","status":"published","published":"2025-12-19T17:15:51.47Z","modified":"2026-06-17T08:36:50.2Z","cvss":[{"version":"4.0","score":1.9,"vector":"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","level":"low","assessor":"secondary"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:L/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"secondary"}],"cwes":["CWE-119","CWE-122","CWE-125"],"updated_at":"2026-11-02T14:11:52.309391Z"}],"osv":[{"id":"ALPINE-CVE-2025-14956","description":"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.","status":"published","published":"2025-12-19T17:15:51.47Z","modified":"2026-11-03T06:32:51.164841242Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T07:16:46.202932Z"},{"id":"CVE-2025-14956","title":"WebAssembly Binaryen wasm-binary.cpp readExport heap-based overflow","description":"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.","status":"published","published":"2025-12-19T16:32:12.536Z","modified":"2026-10-28T10:59:12.862030521Z","cvss":[{"version":"4.0","score":1.9,"vector":"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","level":"low"}],"cwes":["CWE-119","CWE-122"],"updated_at":"2026-11-02T15:44:46.340268Z"},{"id":"DEBIAN-CVE-2025-14956","description":"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.","status":"published","published":"2025-12-19T17:15:51.47Z","modified":"2026-11-03T21:00:06.066758989Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T21:05:16.218603Z"},{"id":"JLSEC-2026-1092","title":"A vulnerability was determined in WebAssembly Binaryen up to 125. Affected by this issue is the...","description":"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.","status":"published","published":"2026-07-31T20:09:46.097Z","modified":"2026-07-31T20:20:42.477954476Z","cvss":[{"version":"2.0","score":4.3,"vector":"AV:L/AC:L/Au:S/C:P/I:P/A:P","level":"medium"},{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","level":"high"},{"version":"4.0","score":1.9,"vector":"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","level":"low"}],"updated_at":"2026-11-02T15:47:18.159338Z"},{"id":"UBUNTU-CVE-2025-14956","description":"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.","status":"published","published":"2025-12-19T17:15:00Z","modified":"2026-10-17T12:57:01.091892818Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium"},{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","level":"high"},{"version":"4.0","score":1.9,"vector":"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","level":"low"}],"updated_at":"2026-11-02T16:55:20.144818Z"},{"id":"openSUSE-SU-2026:11915-1","title":"binaryen-133-1.1 on GA media","description":"These are all security issues fixed in the binaryen-133-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-09-29T00:00:00Z","modified":"2026-09-30T18:23:13.875512892Z","updated_at":"2026-11-02T16:58:40.245664Z"}]}}