{"cve":"CVE-2019-17543","nvd":{"published":"2019-10-14T02:15:10.873","modified":"2026-10-14T07:16:49.003","status":"Modified","description":"LZ4 before 1.9.2 has a heap-based buffer overflow in LZ4_write32 (related to LZ4_compress_destSize), affecting applications that call LZ4_compress_fast with a large input. (This issue can also lead to data corruption.) NOTE: the vendor states \"only a few specific / uncommon usages of the API are at risk.\"","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.1},"cwes":["CWE-787"],"references":["http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00069.html","http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00070.html","https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15941","https://github.com/lz4/lz4/compare/v1.9.1...v1.9.2","https://github.com/lz4/lz4/issues/801"],"products":["lz4_project:lz4"],"source":"nvd","synced_at":"2026-10-19T20:59:10.855360465+00:00"},"epss":{"cve":"CVE-2019-17543","score":0.10451,"percentile":0.95712,"date":"2026-10-25"},"kev":null,"osv":[],"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."]}