{"cve":"CVE-2015-4503","nvd":{"published":"2015-09-24T04:59:06.160","modified":"2026-06-17T00:27:25.403","status":"Modified","description":"The TCP Socket API implementation in Mozilla Firefox before 41.0 mishandles array boundaries that were established with a navigator.mozTCPSocket.open method call and send method calls, which allows remote TCP servers to obtain sensitive information from process memory by reading packet data, as demonstrated by availability of this API in a Firefox OS application.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-200"],"references":["http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00000.html","http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00005.html","http://www.mozilla.org/security/announce/2015/mfsa2015-97.html","http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html","http://www.securityfocus.com/bid/76815"],"products":["mozilla:firefox"],"source":"nvd","synced_at":"2026-10-19T20:37:45.466985407+00:00"},"epss":{"cve":"CVE-2015-4503","score":0.01563,"percentile":0.75269,"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."]}