{"cve":"CVE-2019-17263","nvd":{"published":"2019-10-06T22:15:10.227","modified":"2026-06-17T02:23:35.930","status":"Modified","description":"In libyal libfwsi before 20191006, libfwsi_extension_block_copy_from_byte_stream in libfwsi_extension_block.c has a heap-based buffer over-read because rejection of an unsupported size only considers values less than 6, even though values of 6 and 7 are also unsupported. NOTE: the vendor has disputed this as described in the GitHub issue","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","score":3.3},"cwes":["CWE-125"],"references":["http://packetstormsecurity.com/files/154774/libyal-libfwsi-Buffer-Overread.html","https://github.com/libyal/libfwsi/compare/20181227...20191006","https://github.com/libyal/libfwsi/issues/13","http://packetstormsecurity.com/files/154774/libyal-libfwsi-Buffer-Overread.html","https://github.com/libyal/libfwsi/compare/20181227...20191006"],"products":["libfwsi_project:libfwsi"],"source":"nvd","synced_at":"2026-10-19T20:59:10.855360465+00:00"},"epss":{"cve":"CVE-2019-17263","score":0.0054,"percentile":0.45455,"date":"2026-10-31"},"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."]}