{"id":"CVE-2016-7152","url":"https://www.cyber-defence.io/tools/cve/CVE-2016-7152","generatedAt":"2026-10-28T19:02:58.770Z","title":"The HTTPS protocol does not consider the role of the TCP congestion window in providing information about content length, which makes it easier for remote attackers to obtain cleartext data by leveraging a web-browser configuration in which third-party…","description":"The HTTPS protocol does not consider the role of the TCP congestion window in providing information about content length, which makes it easier for remote attackers to obtain cleartext data by leveraging a web-browser configuration in which third-party cookies are sent, aka a \"HEIST\" attack.","published":"2016-09-06T10:59:00.000Z","lastModified":"2026-06-17T00:52:42.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":5.3,"severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},"cwe":["CWE-200"],"affected":["opera/opera","apple/safari","mozilla/firefox","microsoft/edge","microsoft/internet explorer","google/chrome"],"epss":{"score":0.12766,"percentile":0.96254,"date":"2026-10-27","history":[{"date":"2026-09-21","score":0.15772,"percentile":0.96773},{"date":"2026-09-22","score":0.13983,"percentile":0.9638},{"date":"2026-10-14","score":0.12766,"percentile":0.96225}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 12.8%, higher than 96% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://arstechnica.com/security/2016/08/new-attack-steals-ssns-e-mail-addresses-and-more-from-https-pages/","tags":["Technical Description"],"source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/92769","source":"cve@mitre.org"},{"url":"http://www.securitytracker.com/id/1036741","source":"cve@mitre.org"},{"url":"http://www.securitytracker.com/id/1036742","source":"cve@mitre.org"},{"url":"http://www.securitytracker.com/id/1036743","source":"cve@mitre.org"},{"url":"http://www.securitytracker.com/id/1036744","source":"cve@mitre.org"},{"url":"http://www.securitytracker.com/id/1036745","source":"cve@mitre.org"},{"url":"http://www.securitytracker.com/id/1036746","source":"cve@mitre.org"},{"url":"https://tom.vg/papers/heist_blackhat2016.pdf","tags":["Technical Description"],"source":"cve@mitre.org"},{"url":"http://arstechnica.com/security/2016/08/new-attack-steals-ssns-e-mail-addresses-and-more-from-https-pages/","tags":["Technical Description"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/92769","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1036741","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1036742","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1036743","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1036744","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1036745","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1036746","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://tom.vg/papers/heist_blackhat2016.pdf","tags":["Technical Description"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2016-7152","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}