CVE-2016-7152
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…
Does this matter?
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.
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.
- CVSS 3.0
- 5.3 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 12.77% probability · 96th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-200
- Affected
- opera/opera · apple/safari · mozilla/firefox · microsoft/edge · microsoft/internet explorer · google/chrome
- Source
- cve@mitre.org
EPSS moved from 15.8% on 21 September 2026 to 12.8% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- http://arstechnica.com/security/2016/08/new-attack-steals-ssns-e-mail-addresses-and-more-from-https-pages/Technical Description
- http://www.securityfocus.com/bid/92769
- http://www.securitytracker.com/id/1036741
- http://www.securitytracker.com/id/1036742
- http://www.securitytracker.com/id/1036743
- http://www.securitytracker.com/id/1036744
- http://www.securitytracker.com/id/1036745
- http://www.securitytracker.com/id/1036746
- https://tom.vg/papers/heist_blackhat2016.pdfTechnical Description
- http://arstechnica.com/security/2016/08/new-attack-steals-ssns-e-mail-addresses-and-more-from-https-pages/Technical Description
- http://www.securityfocus.com/bid/92769
- http://www.securitytracker.com/id/1036741
- http://www.securitytracker.com/id/1036742
- http://www.securitytracker.com/id/1036743
- http://www.securitytracker.com/id/1036744
- http://www.securitytracker.com/id/1036745
- http://www.securitytracker.com/id/1036746
- https://tom.vg/papers/heist_blackhat2016.pdfTechnical Description
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.