{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/63726?format=json","vulnerability_id":"VCID-1a1c-ps4h-9yge","summary":"Shally Li was first to report a race condition\nin the lockscreen of Firefox OS that can be used to bypass the passcode\nlock of a Firefox OS device. Under certain circumstances on a locked\ndevice, the user will be dropped directly to the homescreen instead of\nbeing presented with the passcode input dialog.","aliases":[{"alias":"CVE-2015-8511"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/86796?format=json","purl":"pkg:mozilla/Firefox%20OS@2.5.0","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:mozilla/Firefox%2520OS@2.5.0"}],"affected_packages":[],"references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2015-8511","reference_id":"","reference_type":"","scores":[{"value":"0.00036","scoring_system":"epss","scoring_elements":"0.10885","published_at":"2026-05-15T12:55:00Z"},{"value":"0.00036","scoring_system":"epss","scoring_elements":"0.106","published_at":"2026-04-01T12:55:00Z"},{"value":"0.00036","scoring_system":"epss","scoring_elements":"0.10783","published_at":"2026-05-11T12:55:00Z"},{"value":"0.00036","scoring_system":"epss","scoring_elements":"0.10826","published_at":"2026-05-12T12:55:00Z"},{"value":"0.00036","scoring_system":"epss","scoring_elements":"0.10875","published_at":"2026-05-14T12:55:00Z"},{"value":"0.00036","scoring_system":"epss","scoring_elements":"0.1074","published_at":"2026-04-02T12:55:00Z"},{"value":"0.00036","scoring_system":"epss","scoring_elements":"0.10804","published_at":"2026-04-11T12:55:00Z"},{"value":"0.00036","scoring_system":"epss","scoring_elements":"0.10657","published_at":"2026-04-07T12:55:00Z"},{"value":"0.00036","scoring_system":"epss","scoring_elements":"0.10733","published_at":"2026-04-08T12:55:00Z"},{"value":"0.00036","scoring_system":"epss","scoring_elements":"0.1079","published_at":"2026-04-09T12:55:00Z"},{"value":"0.00036","scoring_system":"epss","scoring_elements":"0.10772","published_at":"2026-04-12T12:55:00Z"},{"value":"0.00036","scoring_system":"epss","scoring_elements":"0.10748","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00036","scoring_system":"epss","scoring_elements":"0.10613","published_at":"2026-04-16T12:55:00Z"},{"value":"0.00036","scoring_system":"epss","scoring_elements":"0.10628","published_at":"2026-04-18T12:55:00Z"},{"value":"0.00036","scoring_system":"epss","scoring_elements":"0.10754","published_at":"2026-04-21T12:55:00Z"},{"value":"0.00036","scoring_system":"epss","scoring_elements":"0.10706","published_at":"2026-04-24T12:55:00Z"},{"value":"0.00036","scoring_system":"epss","scoring_elements":"0.10687","published_at":"2026-04-26T12:55:00Z"},{"value":"0.00036","scoring_system":"epss","scoring_elements":"0.10633","published_at":"2026-04-29T12:55:00Z"},{"value":"0.00036","scoring_system":"epss","scoring_elements":"0.10592","published_at":"2026-05-05T12:55:00Z"},{"value":"0.00036","scoring_system":"epss","scoring_elements":"0.1073","published_at":"2026-05-07T12:55:00Z"},{"value":"0.00036","scoring_system":"epss","scoring_elements":"0.10801","published_at":"2026-05-09T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2015-8511"},{"reference_url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1173284","reference_id":"","reference_type":"","scores":[],"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1173284"},{"reference_url":"http://www.mozilla.org/security/announce/2015/mfsa2015-152.html","reference_id":"","reference_type":"","scores":[],"url":"http://www.mozilla.org/security/announce/2015/mfsa2015-152.html"},{"reference_url":"https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:mozilla:firefox_os:*:*:*:*:*:*:*:*","reference_id":"cpe:2.3:o:mozilla:firefox_os:*:*:*:*:*:*:*:*","reference_type":"","scores":[],"url":"https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:mozilla:firefox_os:*:*:*:*:*:*:*:*"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8511","reference_id":"CVE-2015-8511","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8511"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2015-8511","reference_id":"CVE-2015-8511","reference_type":"","scores":[{"value":"6.9","scoring_system":"cvssv2","scoring_elements":"AV:L/AC:M/Au:N/C:C/I:C/A:C"},{"value":"6.4","scoring_system":"cvssv3","scoring_elements":"CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2015-8511"},{"reference_url":"https://www.mozilla.org/en-US/security/advisories/mfsa2015-152","reference_id":"mfsa2015-152","reference_type":"","scores":[{"value":"high","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2015-152"}],"weaknesses":[{"cwe_id":362,"name":"Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')","description":"The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently."}],"exploits":[],"severity_range_score":"6.4 - 8.9","exploitability":null,"weighted_severity":null,"risk_score":null,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-1a1c-ps4h-9yge"}