{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-14956 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-14956 is a medium-severity memory corruption vulnerability in WebAssembly Binaryen, published on 19 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-14956 and fix it if it is affected.\n\nWhat it is: CVE-2025-14956 is a medium-severity memory corruption vulnerability in WebAssembly Binaryen, published on 19 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2025-14956 in the wild and no public exploit code.\n\nAffected product: WebAssembly Binaryen. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2025-14956/ (Markdown: https://insights.sbomify.com/CVE-2025-14956/index.md)","id":"CVE-2025-14956","markdown":"https://insights.sbomify.com/CVE-2025-14956/index.md","name":"CVE-2025-14956","record":{"aliases":["DEBIAN-CVE-2025-14956","GHSA-vjgx-vcpf-hm6w","JLSEC-2026-1092","UBUNTU-CVE-2025-14956"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"WebAssembly Binaryen library","requires_auth":"low_privilege","summary":"A heap-based buffer overflow in WebAssembly Binaryen allows local attackers to execute arbitrary code or cause denial of service via crafted binaries.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulDB","cpe":[{"product":"binaryen","vendor":"webassembly"}],"cvss":{"score":4.8,"severity":"medium","source":"cna","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","version":"4.0"},"cwes":[{"id":"CWE-125","name":"Out-of-bounds Read"},{"id":"CWE-122","name":"Heap-based Buffer Overflow"},{"id":"CWE-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer"}],"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.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"WebAssembly Binaryen wasm-binary.cpp readExport heap-based overflow","id":"CVE-2025-14956","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2025"},"n_packages":0,"n_references":8,"next":{"headline":"WebAssembly Binaryen IRBuilder wasm-ir-builder.cpp makeLocalTee null pointer dereference","id":"CVE-2025-14957"},"packages":[],"prev":{"headline":"Open5GS PFCP handler.c ogs_pfcp_handle_create_pdr initialization","id":"CVE-2025-14955"},"products":["Binaryen"],"published":"2025-12-19","related":[{"cvss_score":6.5,"headline":"Null dereference in n/a","id":"CVE-2020-18378","kev_date_added":null,"published":"2023-08-22"},{"cvss_score":6.5,"headline":"Memory corruption in n/a","id":"CVE-2020-18382","kev_date_added":null,"published":"2023-08-22"},{"cvss_score":6.5,"headline":"Denial of service in n/a","id":"CVE-2019-15758","kev_date_added":null,"published":"2019-08-29"},{"cvss_score":6.5,"headline":"Null dereference in n/a","id":"CVE-2019-15759","kev_date_added":null,"published":"2019-08-29"},{"cvss_score":6.5,"headline":"Memory corruption in n/a","id":"CVE-2019-7700","kev_date_added":null,"published":"2019-02-10"},{"cvss_score":6.5,"headline":"Memory corruption in n/a","id":"CVE-2019-7701","kev_date_added":null,"published":"2019-02-10"},{"cvss_score":6.5,"headline":"Null dereference in n/a","id":"CVE-2019-7702","kev_date_added":null,"published":"2019-02-10"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-02-24","vendors":["WebAssembly"]},"summary":"A heap-based buffer overflow in WebAssembly Binaryen allows local attackers to execute arbitrary code or cause denial of service via crafted binaries.","url":"https://insights.sbomify.com/CVE-2025-14956/"}