{"cve":"CVE-2019-15553","nvd":{"published":"2019-08-26T15:15:12.127","modified":"2026-06-17T02:20:37.317","status":"Modified","description":"An issue was discovered in the memoffset crate before 0.5.0 for Rust. offset_of and span_of can cause exposure of uninitialized memory.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5},"cwes":["CWE-908"],"references":["https://github.com/Gilnaa/memoffset/issues/9#issuecomment-505461490","https://rustsec.org/advisories/RUSTSEC-2019-0011.html","https://github.com/Gilnaa/memoffset/issues/9#issuecomment-505461490","https://rustsec.org/advisories/RUSTSEC-2019-0011.html"],"products":["memoffset_project:memoffset"],"source":"nvd","synced_at":"2026-10-19T20:58:39.700375520+00:00"},"epss":{"cve":"CVE-2019-15553","score":0.01766,"percentile":0.78074,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-rh89-x75f-rh3c","url":"https://osv.dev/vulnerability/GHSA-rh89-x75f-rh3c","summary":"Exposure of uninitialized memory in memoffset","modified":"2023-11-08T04:01:14.285412Z","packages":[{"ecosystem":"crates.io","name":"memoffset","purl":"pkg:cargo/memoffset","ranges":["<0.5.0"],"fixed":["0.5.0"]}]},{"id":"RUSTSEC-2019-0011","url":"https://osv.dev/vulnerability/RUSTSEC-2019-0011","summary":"Flaw in offset_of and span_of causes SIGILL, drops uninitialized memory of arbitrary type on panic in client code","modified":"2023-11-08T04:01:14.285412Z","packages":[{"ecosystem":"crates.io","name":"memoffset","purl":"pkg:cargo/memoffset","ranges":[">=0.0.0-0 <0.5.0"],"fixed":["0.5.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}