{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-14956","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","state":"PUBLISHED","assignerShortName":"VulDB","dateReserved":"2025-12-19T08:38:51.694Z","datePublished":"2025-12-19T16:32:12.536Z","dateUpdated":"2026-02-24T05:57:29.961Z"},"containers":{"cna":{"providerMetadata":{"orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","shortName":"VulDB","dateUpdated":"2026-02-24T05:57:29.961Z"},"title":"WebAssembly Binaryen wasm-binary.cpp readExport heap-based overflow","problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-122","lang":"en","description":"Heap-based Buffer Overflow"}]},{"descriptions":[{"type":"CWE","cweId":"CWE-119","lang":"en","description":"Memory Corruption"}]}],"affected":[{"vendor":"WebAssembly","product":"Binaryen","versions":[{"version":"125","status":"affected"}],"cpes":["cpe:2.3:a:webassembly:binaryen:*:*:*:*:*:*:*:*"]}],"descriptions":[{"lang":"en","value":"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."}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":4.8,"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","baseSeverity":"MEDIUM"}},{"cvssV3_1":{"version":"3.1","baseScore":5.3,"vectorString":"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","baseSeverity":"MEDIUM"}},{"cvssV3_0":{"version":"3.0","baseScore":5.3,"vectorString":"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","baseSeverity":"MEDIUM"}},{"cvssV2_0":{"version":"2.0","baseScore":4.3,"vectorString":"AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C"}}],"timeline":[{"time":"2025-12-19T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2025-12-19T01:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2025-12-30T20:37:02.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"Oneafter (VulDB User)","type":"reporter"}],"references":[{"url":"https://vuldb.com/?id.337592","name":"VDB-337592 | WebAssembly Binaryen wasm-binary.cpp readExport heap-based overflow","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/?ctiid.337592","name":"VDB-337592 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/?submit.717315","name":"Submit #717315 | WebAssembly binaryen 9a226ac Heap-based Buffer Overflow","tags":["third-party-advisory"]},{"url":"https://github.com/WebAssembly/binaryen/issues/8089","tags":["issue-tracking"]},{"url":"https://github.com/WebAssembly/binaryen/pull/8092","tags":["issue-tracking"]},{"url":"https://github.com/oneafter/1204/blob/main/hbf","tags":["exploit"]},{"url":"https://github.com/WebAssembly/binaryen/commit/4f52bff8c4075b5630422f902dd92a0af2c9f398","tags":["patch"]},{"url":"https://github.com/WebAssembly/binaryen/","tags":["product"]}],"tags":["x_open-source"]},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-12-19T17:24:53.817424Z","id":"CVE-2025-14956","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-12-19T18:00:41.794Z"}}]}}