The TLS protocol 1.2 and earlier, when a DHE_EXPORT ciphersuite is enabled on a server but not on a client, does not properly convey a DHE_EXPORT choice, which allows man-in-the-middle attackers to conduct cipher-downgrade attacks by rewriting a ClientHello with DHE replaced by DHE_EXPORT and then rewriting a ServerHello with DHE_EXPORT replaced by DHE, aka the "Logjam" issue.
Published: 2015-05-21
CVSS: 4.3
CVSS Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N
Download Exploit for CVE-2015-4000 here:
Tip: Download official Tor Browser at https://www.torproject.org/download/ to access .onion links.
https://augustaverburg.nl/exploit-665-cve-2025-47827/
https://augustaverburg.nl/exploit-2-cve-2021-21975/