{"id":"CVE-2025-6272","aliases":["GHSA-rrmw-gv85-w824","PYSEC-2025-186"],"url":"https://o3.security/vulnerability/CVE-2025-6272","summary":"wasm3 m3_compile.c MarkSlotAllocated out-of-bounds write","details":"A vulnerability has been found in wasm3 0.5.0 and classified as problematic. This vulnerability affects the function MarkSlotAllocated of the file source/m3_compile.c. The manipulation leads to out-of-bounds write. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.","published":"2025-06-19T18:00:11.510Z","modified":"2026-07-15T01:49:02.201528026Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"pywasm3","fixedVersion":null}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/6xxx/CVE-2025-6272.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-6272"},{"type":"ADVISORY","url":"https://vuldb.com/?id.313276"},{"type":"ADVISORY","url":"https://vuldb.com/?submit.593008"},{"type":"REPORT","url":"https://github.com/wasm3/wasm3/issues/531"},{"type":"REPORT","url":"https://vuldb.com/?ctiid.313276"},{"type":"EVIDENCE","url":"https://github.com/user-attachments/files/19516600/wasm3_crash.txt"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T01:49:02.201528026Z"}}