{"cve":"CVE-2016-5271","nvd":{"published":"2016-09-22T22:59:04.770","modified":"2026-06-17T00:49:05.597","status":"Modified","description":"The PropertyProvider::GetSpacingInternal function in Mozilla Firefox before 49.0 allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via text runs in conjunction with a \"display: contents\" Cascading Style Sheets (CSS) property.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","score":6.5},"cwes":["CWE-125"],"references":["http://www.mozilla.org/security/announce/2016/mfsa2016-85.html","http://www.securityfocus.com/bid/93052","http://www.securitytracker.com/id/1036852","https://bugzilla.mozilla.org/show_bug.cgi?id=1288946","https://security.gentoo.org/glsa/201701-15"],"products":["mozilla:firefox"],"source":"nvd","synced_at":"2026-10-19T20:40:10.783210791+00:00"},"epss":{"cve":"CVE-2016-5271","score":0.01416,"percentile":0.72768,"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."]}