{"cve":"CVE-2015-2741","nvd":{"published":"2015-07-06T02:01:09.517","modified":"2026-06-17T00:24:39.990","status":"Modified","description":"Mozilla Firefox before 39.0, Firefox ESR 38.x before 38.1, and Thunderbird before 38.1 do not enforce key pinning upon encountering an X.509 certificate problem that generates a user dialog, which allows user-assisted man-in-the-middle attackers to bypass intended access restrictions by triggering a (1) expired certificate or (2) mismatched hostname for a domain with pinning enabled.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-310"],"references":["http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00025.html","http://rhn.redhat.com/errata/RHSA-2015-1207.html","http://rhn.redhat.com/errata/RHSA-2015-1455.html","http://www.mozilla.org/security/announce/2015/mfsa2015-67.html","http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html"],"products":["mozilla:firefox","mozilla:firefox_esr","oracle:solaris"],"source":"nvd","synced_at":"2026-10-19T20:36:40.444340523+00:00"},"epss":{"cve":"CVE-2015-2741","score":0.01309,"percentile":0.70616,"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."]}