{"id":"CVE-2024-34252","aliases":["EUVD-2024-34714","GHSA-hh39-vjv8-j337","PYSEC-2024-309"],"status":"published","title":"pywasm3 contains a global buffer overflow which leads to segmentation fault","description":"wasm3 v0.5.0 was discovered to contain a global buffer overflow which leads to segmentation fault via the function \"PreserveRegisterIfOccupied\" in wasm3/source/m3_compile.c.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.00627,"percentile":0.50406,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120"],"published":"2024-05-06T00:00:00Z","modified":"2026-10-28T02:30:59Z","affected":[{"source":"ghsa","ecosystem":"PyPI","package":"pywasm3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.5.0"}]}]},{"source":"osv","ecosystem":"PyPI","package":"pywasm3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.5.0"}]}],"versions":["0.0.1","0.0.2","0.4.8","0.4.9","0.5.0"]},{"source":"osv","ecosystem":"PyPI","package":"pywasm3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.5.0"}]}],"versions":["0.0.1","0.0.2","0.4.8","0.4.9","0.5.0"]}],"products":[{"vendor":"wasm3_project","product":"wasm3"}],"references":[{"url":"https://github.com/wasm3/wasm3/issues/483","tags":["x_transferred","Exploit","Issue Tracking","Vendor Advisory","report","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-34252","tags":["advisory"]},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/pywasm3/PYSEC-2024-309.yaml","tags":["web"]},{"url":"https://github.com/wasm3/pywasm3/blob/main/wasm3/m3_compile.c#L420","tags":["web"]},{"url":"https://github.com/advisories/GHSA-hh39-vjv8-j337","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/34xxx/CVE-2024-34252.json","tags":["advisory"]},{"url":"https://github.com/wasm3/pywasm3","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2024-34252","description":"wasm3 v0.5.0 was discovered to contain a global buffer overflow which leads to segmentation fault via the function \"PreserveRegisterIfOccupied\" in 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